Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)

func read() string {
	sc.Scan()
	return sc.Text()
}

func main() {
	sc.Split(bufio.ScanLines)
	for sc.Scan() {
		s := strings.Split(sc.Text(), " ")
		a, _ := strconv.ParseFloat(s[0], 64)
		b, _ := strconv.ParseFloat(s[1], 64)
		c, _ := strconv.ParseFloat(s[2], 64)
		d, _ := strconv.ParseFloat(s[3], 64)
		e, _ := strconv.ParseFloat(s[4], 64)
		f, _ := strconv.ParseFloat(s[5], 64)
		x := ((b * f) - (c * e)) / ((b * d) - (a * e))
		y := ((a * f) - (c * d)) / ((a * e) - (b * d))
		if x == 0 {
			fmt.Printf("0.000 %.3f\n", y)
		} else if y == 0 {
			fmt.Printf("%.3f 0.000\n", x)
		} else {
			fmt.Printf("%.3f %.3f\n", x, y)
		}
	}
}

C++: #include <iostream>			//std::cout, std::cin
#include <string>			//std::string,std::to_string(C++11)
#include <vector>			//std::vector
#include <valarray>			//std::valarray
#include <algorithm>		//std::sort
#include <ctime>			//localtime_s
#include <cstdlib>			//abs
#include <cmath>			//abs,std::pow,sqrt,sin,cos,round,floor,ceil
#include <fstream>			//std::ifstream,std::ofstream
#include <iomanip>			//std::setprecision,std::setw,std::setfill
#include <random>			//std::random(C++11)
#include <numeric>			//std::accumulate
#include <functional>		//std::greater
#include <chrono>			//std::chrono(C++11)
#include <bitset>			//std::bitset
#include <queue>			//std::queue

const static double	de_PI	= 3.14159265358979323846;
const static int	de_MOD	= 1000000007;
const static int	de_MAX	= 999999999;

int main(void) {

	//std::ifstream in("123.txt");	std::cin.rdbuf(in.rdbuf());
	//std::ofstream ofs("456.csv");
	//std::chrono::system_clock::time_point t_st = std::chrono::system_clock::now();

	double a = 0, b = 0, c = 0, d = 0, e = 0, f = 0;
	std::vector<double> X, Y;

	while (std::cin >> a) {
		std::cin >> b >> c >> d >> e >> f;
		X.push_back((b*f - c*e) / (b*d - a*e));
		Y.push_back((a*f - c*d) / (a*e - b*d));
	}

	for (unsigned int i = 0; i < X.size(); i++) {
		std::cout << std::fixed << std::setprecision(3) << X[i] << " " << Y[i] << std::endl;
	}

	//std::chrono::system_clock::time_point t_ed = std::chrono::system_clock::now();
	//std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(t_ed - t_st).count() << "ms" << std::endl;

}

C++: #include<iostream>
#include<stdio.h>
#include<string.h>
#include<math.h>
using namespace std;

#define MAX 256

int main(void){

	double a = 0, b = 0, c = 0, d = 0, e = 0, f = 0;
	double ansx[MAX], ansy[MAX];

	for (int i = 0; i < MAX; i++){
		ansx[i] = 0;
		ansy[i] = 0;
	}


	int i = 0;

	while (scanf("%lf%lf%lf%lf%lf%lf%lf", &a,&b,&c,&d,&e,&f) != EOF){
		ansx[i] = (c*e - b*f) / (a*e - b*d);
		ansy[i] = (c*d - a*f) / (b*d - a*e);
		i++;
	}

	for (int j = 0; j < i; j++){
		printf("%.3lf %.3lf\n", ansx[j], ansy[j]);
	}

	return 0;
}

C++: #include<iostream>
#include<iomanip>
#include<cmath>
double r(double x,int n){
  for(int i=0;i<n;i++) x *= 10;
  x = floor(x+0.5);
  for(int i=0;i<n;i++) x /= 10;
  return x;
}
using namespace std;
int main(){
  double a,b,c,d,e,f,x,y,dk;
  int n;
  while(cin>>a>>b>>c>>d>>e>>f){
    /*a *= d;
    b *= d;
    c *= d;//方程式にd倍
    dk = d;
    d *= (a/dk);
    e *= (a/dk);
    f *= (a/dk);//方程式にa倍
    y = (c-f)/(b-e);
    a /= d;
    b /= d;
    c /= d;//元の方程式
    d /= a;
    e /= a;
    f /= a;//元の方程式*/
    y = (c*d-a*f)/(b*d-a*e);
    x = (e*c-f*b)/(a*e-b*d);
    cout << fixed << setprecision(3) << r(x,3) << ' ' << r(y,4) << endl;
  }
  return 0;
}

C++: #include<iostream>
#include<iomanip>
using namespace std;

int main() {
	double a, b, c, d, e, f;
	double x, y;
	while (cin >> a >> b >> c >> d >> e >> f) {
		double y = (a * f - c * d) / (a * e - b * d);
		double x = (c - b * y) / a;
		cout << fixed << setprecision(3) << x << " " << y << endl;
	}
	return 0;
}

C++: #define _USE_MATH_DEFINES
#include <iostream> 
#include <iomanip>
#include <string>
#include <map>
#include <math.h>
#include <vector>
#include <algorithm>
using namespace std; 
int main(){
	double a, b, c, d, e, f, x, y;
	while(cin >> a >> b >> c >> d >> e >> f){
		x = (c*e - f*b) / (a*e - d*b);
		y = (c*d - f*a) / (b*d - e*a);
		std::cout << std::fixed;
		std::cout << std::setprecision(3) << x << " " << y << endl;
	}
	return 0;
}

C++: #include<iostream>
#include<stdio.h>
using namespace std;

int main(){

	double a,b,c,d,e,f;

	double x,y;

	while(cin>>a){
		cin>>b;
		cin>>c;
		cin>>d;
		cin>>e;
		cin>>f;

		x = (e * c + (-b)*f)/(a*e-b*d);
		y = (-d * c + a * f)/(a*e-b*d);

		if(fabs(x)<1e-3 && fabs(y)<1e-3){
			printf("%.3f %.3f\n",fabs(x),fabs(y));
		}
		else if(fabs(x)<1e-3){
			printf("%.3f %.3f\n",fabs(x),y);
		}
		else if(fabs(y)<1e-3){
			printf("%.3f %.3f\n",x,fabs(y));
		}
		else{
			printf("%.3f %.3f\n",x,y);
		}

	}

	return 0;
}

C++: #include <iostream>
#include <cstring>
#include <cstdio>
using namespace std;
 
int main() {
	int a,b,c,d,e,f,q,s;
	double  x,y;
	while(cin >> a>>b>>c>>d>>e>>f){
		x = (c*e-f*b)/(a*e-d*b);
		y = (a*f-d*c)/(a*e-d*b);
		printf("%.3f %.3f\n",x,y);
	}
}

C++: #include <iostream>
#include <cstdio>
using namespace std;

int main()
{
  double a, b, c, d, e, f;
  while (cin >> a >> b >> c >> d >> e >> f){
    printf("%.3f %.3f\n", (c - ((b * f) / e)) / (a - ((b * d) / e)), (c - ((a * f) / d)) / (b - ((a * e) / d)));
  }

  return 0;
}

C++: #include <iostream>
#include <iomanip>

using namespace std;

int main(){
    double a, b, c, d, e, f;
    double x, y;
    while(cin >> a >> b >> c >> d >> e >> f) {
        x = (double)((c*e - b*f)/(a*e - b*d) * 1000) / 1000.0;
        y = (double)((d*c - a*f)/(b*d - a*e) * 1000) / 1000.0;
        x = (x == -0.0) ? 0.000 : x;
        y = (y == -0.0) ? 0.000 : y;
        cout << fixed << setprecision(3);
        cout << x << " " << y << endl;
    }
    return 0;
}

C++: #include <iostream>
#include <math.h>
#include <stdio.h>
#include <string>
#include <string.h>
#include <algorithm>
#include <cmath>
#include <limits>
#include <sstream>
#include <iomanip>

using namespace std;

int main (void)
{
	int a,b,c,d,e,f;

	while (cin >> a >> b >> c >> d >> e >> f)
	{
		double y = (a * f - c * d) / (a * e - b * d);
		double x = (c - b * y) / a;

		printf("%.3f %.3f\n",x,y);
	}
}

C++: #include<stdio.h>
#include<math.h>
int main(void){
    double a,b,c,d,e,f,A,x,y,X,Y,Z;

    while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f)!=EOF){
    A=a;
    a=a*d,b=b*d,c=c*d;
    d=d*A,e=e*A,f=f*A;

    Y=b-e,Z=c-f;
    y=Z/Y;
    x=(c-y*b)/a;
    x=x+0.0005,y=y+0.0005;
    x=x*1000,y=y*1000;
    x=floor(x);
    y=floor(y);
    x=x/1000,y=y/1000;
    if(x==-0)x=0;
    if(y==-0)y=0;
   printf("%.3lf %.3lf\n",x,y);
    }
   // printf("\na%lf\nb%lf\nc%lf\nd%lf\ne%lf\nf%lf\n%lf\n%lf",a,b,c,d,e,f,Y,Z);


    }

C++: #include <iostream>
#include <cstdio>
using namespace std;

int main() {
	double a, b, c, d, e, f;
	while (cin >> a >> b >> c >> d >> e >> f) {
		double ansX = (e*c - b*f) / (a*e - b*d);
		double ansY = (a*f - d*c) / (a*e - b*d);
		if (ansX < 0.0005&&-0.0005 < ansX)ansX = 0;
		if (ansY < 0.0005&&-0.0005 < ansY)ansY = 0;
		printf("%.3f %.3f\n", ansX, ansY);
	}

	return 0;
}

C++: #include <iostream>
using namespace std;

int main()
{
	double a,b,c,d,e,f;
	while(cin>>a>>b>>c>>d>>e>>f)
	{
		unsigned x = (c*e-b*f)/(a*e-b*d)*1000+0.5;
		unsigned y = (c*d-a*f)/(b*d-a*e)*1000+0.5;
		printf("%.3f %.3f\n", 0.001*x, 0.001*y);
	}
}

C++: #include <stdio.h>
#include <math.h>
 
using namespace std;
 
 
int main(){
    double a,b,c,d,e,f,x,y;
 
    while(scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&e,&f)!=EOF){
        x=(c*e-b*f)/(a*e-d*b);
        y=(a*f-c*d)/(a*e-b*d);
        if(x == 0)x=0;
        if(y == 0)y=0;
        printf("%.3lf %.3lf\n",x,y);
    }
 
    return 0;
}

C++: #include<iostream>
using namespace std;
void sort(int &a, int &b, int &c);

int main() {
	int a,b,c,d,p,q;
	while(cin>>a>>b>>p>>c>>d>>q) {
		double x=(d*p-b*q)/(d*a-b*c);
		double y=(c*p-a*q)/(c*b-a*d);

		printf("%.3f %.3f", x, y);
	}
}