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++: /* All men have limits. They learn what they are and learn
   not to exceed them, I ignore mine. -Batman           */
#include <bits/stdc++.h>
//#include <iostream>
//#include <vector>
//#include <Windows.h>
using namespace std;

int main(){
int a,b,c,d,e,f;
while(cin>>a>>b>>c>>d>>e>>f){
	
	printf("%.3lf %.3lf\n",(double)(c*e-f*b)/(a*e-d*b),(double)(c*d-f*a)/(b*d-e*a));
		
}
return 0;
}

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

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

int main(){
	double a,b,c,d,e,f,x,y;
	while(true){
		cin>>a>>b>>c>>d>>e>>f;
		if(cin.eof()) break;
		x=(b*f-c*e)/(b*d-a*e);
		y=(c-a*x)/b;
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}

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

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

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

int main()
{
  double a[10],b[10];
  for(int i=0;i<6;i++)
  {

	  cin>>a[i];
	  if((a[i]>1000)||(a[i]<-1000)){
	    cout << "nomber error" <<endl;
	    return 0;
     }
  }
  for(int i=0;i<6;i++)
  {

	  cin>>b[i];
	  if((b[i]>1000)||(b[i]<-1000)){
	    cout << "nomber error" <<endl;
	    return 0;
     }
  }
  cout<<fixed<<setprecision(3)<<(a[2]*a[4]-a[1]*a[5])/(a[0]*a[4]-a[1]*a[3])<<" ";
  cout<<fixed<<setprecision(3)<<(a[2]*a[3]-a[0]*a[5])/(a[1]*a[3]-a[0]*a[4])<<" ";
  cout<<endl;
  cout<<fixed<<setprecision(3)<<(b[2]*b[4]-b[1]*b[5])/(b[0]*b[4]-b[1]*b[3])<<" ";
  cout<<fixed<<setprecision(3)<<(b[2]*b[3]-b[0]*b[5])/(b[1]*b[3]-b[0]*b[4])<<" ";
  return 0;
}

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

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

C++: #include <iostream>
#include <cmath>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <list>
#include <deque>
#include <algorithm>
#include <iomanip>
#include <functional>

#define REP(i, n) for(int i = 0;i < (n); i++)
#define REP2(i, x, n) for(int i = (x); i < (n); i++)
#define REPR(i, n) for(int i = (n); i >= 0; i--)

#define ALL(a) (a).begin(),(a).end()
#define SORT(c) sort((c).begin(),(c).end())
#define DESCSORT(c) sort(c.begin(), c.end(), greater<int>())

#define LL long long int
#define LD long double

#define PI 3.14159265358979

using namespace std;

//================================================
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	double A, B, C, D, E, F, X, Y;
	while (cin >> A >> B >> C >> D >> E >> F) {
		X = (C * E - B * F) / (A * E - B * D);
		Y = (A * F - C * D) / (A * E - B * D);
		if (X == -0) X = 0.0;
		if (Y == -0) Y = 0.0;

		cout << fixed << setprecision(3) << X << " " << Y << "\n";
	}
	return 0;
}

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

// ax + by = c
// dx + ey = f
// det(A) = ae-bd
// A^(-1) = 1/det(A)* ((e,-b),(-d,a))
// x = 1/det(A) *(ce-bf)
// y =			*(-cd+af)

int main(int,char**){
	double a,b,c,d,e,f;
	double x,y;
	std::cout<< std::setprecision(3) << std::setiosflags(std::ios::fixed);
	while(std::cin >> a){
		std::cin >> b >> c >> d >> e >> f;
		double det(a*e-b*d);
		x= (c*e-b*f)/det;
		y= (-c*d+a*f)/det;
		std::cout<< x << ' ' << y<<std::endl;
	}
	return 0;
}

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

int main(){

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

	while(1){
		cin >> a >> b >> c >> d >> e >> f;
		x = (c*e-b*f)/(a*e-b*d);
		y = (c*d-a*f)/(b*d-a*e);

		cout << x << " " << y << endl;
	}

	return 0;
}

C++: #include <cstdio>

int main(){
    double a,b,c,d,e,f;
    while(scanf("%lf %lf %lf %lf %lf %lf",&a, &b, &c, &d, &e, &f)!=EOF){
        double D = a*e-b*d;
        double x = (e*c-b*f)/D;
        double y = (a*f-c*d)/D;
        printf("%.3f %.3f\n", x, y);
    }
    return 0;
}

C++: #include<iostream>
#include<iomanip>
#include<vector>
#include<map>
#include<string>
using namespace std;
/*
??£???????¨????
	ax + by = c
	dx + ey = f
????§£x, y???????????????????????°??????
*/
int main() {
	int a, b, c, d, e, f;
	int cnt = 0;						//??\??????????????£???????¨????????????°
	std::vector<double> x_vector;		//x????§£???????´?
	std::vector<double> y_vector;		//y????§£???????´?

#if 0
	while (cnt < 2) {
		cin >> a >> b >> c >> d >> e >> f;
#else
	while (cin >> a >> b >> c >> d >> e >> f) {
#endif
		double x = (b * f - c * e) / (b * d - a * e);
		double y = (c * d - a * f) / (b * d - a * e);

		cnt++;
		x_vector.push_back(x);
		y_vector.push_back(y);
	}

	for (unsigned int i = 0; i < cnt; i++) {
		int dummy_x = x_vector[i];		//?????£????????????????°???°?????\?????????
		int dummy_y = y_vector[i];		//?????£????????????????°???°?????\?????????

		//x?????????????°???°????¬¬4???????????¨?????\
		if (5 <= (x_vector[i] * 10000 - dummy_x * 10000)) {
			x_vector[i] += 0.001;
		}

		//y?????????????°???°????¬¬4???????????¨?????\
		if (5 <= (y_vector[i] * 10000 - dummy_y * 10000)) {
			y_vector[i] += 0.001;
		}

		std::cout << std::fixed;
		std::cout << std::setprecision(3) << x_vector[i] << " ";
		std::cout << std::setprecision(3) << y_vector[i] << endl;
	}

	//???????????°
	//while (1);

	return 0;
}

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

int main()
{
	float a,b,c,d,e,f,x,y=0;
	
	while(cin >> a >> b >> c >> d >> e >> f){
	
	x = (c*e - b*f)/(a*e - b*d);
	y = (c*d - a*f)/(b*d - a*e);
	
	printf("%.3f %.3f\n",x,y);
	}
	
	return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	double	x,a,b,c,d,e,f;
	cin >> a >> b >> c >> d >> e >> f;
	//a*x-b*d*x/e =c-b*f/e
	for(x=-1000000;x<1000000;x++)
	{
		if(a*(x/1000)+b*((f-d*(x/1000))/e) == c)
		{
			printf("%0.3lf",x/1000);
			break;
		}
	}
	cout << endl;
	
	printf("%0.3lf",(f-d*x/1000)/e); //yÌoÍ
}

C++: #include <iostream>
#include <stdlib.h>
#include <string.h>
#include <sstream>
#include <iostream>
#include <math.h>
#include <iomanip>

using namespace std;

string float_to_string(float f, int digits)
{
  if (f == 0) {
    f = 0;
  }
  ostringstream oss;
  oss << setprecision(digits) << setiosflags(ios::fixed) << f;
  return oss.str();
}

void calc_and_output(int *c)
{
  float x = (float)(c[1]*c[5]-c[2]*c[4])/(c[1]*c[3]-c[0]*c[4]);
  float y = (float)(c[0]*c[5]-c[2]*c[3])/(c[0]*c[4]-c[1]*c[3]);

  cout << float_to_string(x, 3) << " " << float_to_string(y, 3) << endl;
}

int main(int argc, char const* argv[])
{
  int c[6];

  string line;
  while (getline(cin, line)) {
    istringstream iss(line);
    int val;
    int c[6];
    for (int i = 0; i < 6; i++) {
      iss >> val;
      c[i] = val;
    };

    calc_and_output(c);
  }

  return 0;
}