Go: package main

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

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextFloat64() (float64, error) {
	return strconv.ParseFloat(nextString(), 64)
}

func mathRound(f float64) float64 {
	return math.Floor(f + .5)
}

func round(x float64) float64 {
	if math.Abs(x) < 0.001 {
		return 0
	}
	return mathRound(x*1000) / 1000
}

func main() {
	scanner.Split(bufio.ScanWords)
	for {
		a, err := nextFloat64()
		if err != nil {
			break
		}
		b, _ := nextFloat64()
		c, _ := nextFloat64()
		d, _ := nextFloat64()
		e, _ := nextFloat64()
		f, _ := nextFloat64()

		detA := a*e - b*d
		x := (c*e - b*f) / detA
		y := (a*f - c*d) / detA

		fmt.Printf("%.3f %.3f\n", round(x), round(y))
	}
}

C++: #include <math.h>
#include <iostream>
#include <ios>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <string>

#define YES "YES"
#define NO "NO"
#define space ' '

using namespace std;

void func();

int main(void)
{
	
	func();

	return 0;
}

// using matrix	?????????????????´??????
void func()
{
	double a, b, c, d, e, f;
	double x, y;

	while (cin >> a >> b >> c >> d >> e >> f, !cin.eof()){


		cout << fixed << setprecision(3);


		if ((a*e - d*b) == 0)
			x = 0.0, y = 0.0;
		else {
			x = ((e*c - b*f) / (a*e - d*b));
			y = ((-(d*c) + a*f) / (a*e - d*b));


			if (x == 0)
				x = 0.0;
			if (y == 0)
				y = 0.0;
		}
		cout << x << space << y << endl;


		cout << dec;
	}
}

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

using namespace std;

double roundOff(double);

int main(void){
	for(int a, b, c, d, e, f; cin >> a >> b >> c >> d >> e >> f;){
		double delta = a * e - b * d;
		double x = roundOff((c * e - b * f) / delta);
		double y = roundOff((a * f - c * d) / delta);

        printf("%.3lf %.3lf\n", x, y);
	}
	return 0;
}

double roundOff(double a){
	a*=1000;
	a = int(a + 0.5 - (a < 0));
	a/=1000.;
	return a;
}

C++: #include<cstdio>
#include<iostream>
class GCDandLCM{
    public:
        void solve(int a,int b){
            int big=a,small=b;
            if(a<b){ 
                big=b;
                small=a;
                int tmp=a;
                a=b;
                b=tmp;
            }
            while(big%small!=0){ 
                int tmp=big%small;
                big=small;
                small=tmp;
            }
            printf("%d %d\n",small,(a*b)/small);
        }
};
int main(){ 
    GCDandLCM inst;
    int a,b;
    while(cin>>a>>b){ 
        inst.solve(a,b);
    }
}

C++: #include<stdio.h>
int main(void)
{
	int b,a,e,d,f,i,c;
	float y,x;
	while(scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f)!=EOF)  {
			y=(c*d-a*f)/(b*d-a*e);
			x=(b*f-c*e)/(b*d-a*e);
		if(x<0.0001 && x>-0.0001){
			x=0.0000;
		}
		if(y<0.0&&y>-0.0001){
			y=0.0000;
		}	
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}

C++: #include<iostream>
#include<string>
#include<algorithm>
#include<map>
#include<set>
#include<utility>
#include<vector>
#include<cmath>
#include<cstdio>
#define loop(i,a,b) for(int i=a;i<b;i++) 
#define rep(i,a) loop(i,0,a)
#define pb push_back
#define mp make_pair
#define it ::iterator
#define all(in) in.begin(),in.end()
const double PI=acos(-1);
const double ESP=1e-10;
using namespace std;
int main(){
  double a,b,c,d,e,f;
  while(cin>>a>>b>>c>>d>>e>>f){
    double x=(c*e-b*f)/(a*e-b*d);
    double y=(c-a*x)/b;
    
    printf("%.3f %.3f\n",x,y);
  }
  

}

C++: #include <bits/stdc++.h>
using namespace std;
int main(){
	long long a,b,c,d,e,f,X,Y;
	double x,y;
	while(cin >> a >> b >> c >> d >> e >> f){
		x=(double)(c*(a*e-b*d)-b*(a*f-c*d))/(double)(a*(a*e-b*d));
		y=(double)(a*f-c*d)/(double)(a*e-b*d);
		x*=10000;y*=10000;
		X=x;Y=y;
		if(X%10>=5){
			X+=10;
		}
		X/=10;
		X*=10;
		if(Y%10>=5){
			Y+=10;
		}
		Y/=10;
		Y*=10;
		x=X;y=Y;
		x/=10000;
		y/=10000;
		printf("%.3lf %.3lf\n",x,y);
	}
	return 0;
}

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

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

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

double shisyagonyu(double x
  if(x>0){
    x += 0.0005;
  }
  if(x<0){
    x -= 0.0005;
  }
  return x;
}

int main(){
  double a,b,c,d,e,f,x,y;

  while(std::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);

    std::cout << x;
    std::cout << " " << y << std::endl;
*/
    x = shisyagonyu((c*e-b*f)/(a*e-b*d));
    y = shisyagonyu((a*f-c*d)/(a*e-b*d));

    std::cout << std::fixed;
    std::cout << std::setprecision(3) << x;
    std::cout << " " << y << std::endl;

  }
}

C++: #include <iostream>
#include <iomanip>
 
using namespace std;
 
int main() {
 
    double a, b, c, d, e, f;
     
    while (cin >> a >> b >> c  >> d >> e >> f){
 
    cout << fixed << setprecision(3) << ((c*e-b*f)/(a*e-b*d))  << " " << ((a*f-c*d)/(a*e-b*d)) << endl;
     
    }
 
    return 0;

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

double mround(double a){
	if(a<0)return a-0.0005;
	return a+0.0005;
}
int main(){
	double a[6];
	double x,y;
	while(cin>>a[0]>>a[1]>>a[2]>>a[3]>>a[4]>>a[5]){
		double b=a[1]/a[4];
		for(int i=0;i<3;i++)a[3+i]*=b;
		x=(a[2]-a[5])/(a[0]-a[3]);
		y=(a[2]-x*a[0])/a[1];

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


	return 0;
}

C++: #include <iostream>
#include <vector>
#include <iomanip>
#include <cstdio>
using namespace std;
#define max(x, y) ((x) > (y) ? (x) : (y))
#define min(x, y) ((x) < (y) ? (x) : (y))

template<typename TYPE>
void my_swap(TYPE& x, TYPE& y){
	TYPE tmp = x;
	x = y;
	y = tmp;
}

int main()
{
	int a, b, c, d, e, f;
	cout << showpoint << setprecision(3);
	while (cin >> a >> b >> c >> d >> e >> f){
		double x = ((double)(b*f - c*e)) / (b*d - a*e);
		if (x == -0) x *= -1;
		double y = ((double)(c*d - a*f)) / (b*d - a*e);
		if (y == -0) y *= -1;
		//cout << x << ' ' << y << "\n";
		//cout << ((double)(b*f - c*e)) / (double)(b*d - a*e) << ' ' << ((double)(c*d - a*f)) / (double)(b*d - a*e) << "\n";
		printf("%.3f %.3f\n", x, y);
	}
	cout.flush();
}

C++: #include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <cstring>
#include <climits>
#include <cmath>
#include <cfloat>

#define FOR(i,b,n) for(int i=b;i<n;i++)
#define CLR(mat) memset(mat, 0, sizeof(mat))
#define INF 1<<25

using namespace std;

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

int main()
{
	while( cin >> a >> b >> c >> d >> e >> f, !cin.eof())
	{
		b /= a; c /= a; a = 1.0;
		e /= d; f /= d; d = 1.0;
		
		y = (c-f)/(b-e);
		x = c-b*y;

		printf("%.3lf %.3lf",x,y);

	}

	return 0;
}

C++: #include <iostream>
#include <queue>
#include <cmath>

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 - b*f) / (a*e - b*d);
        y = (a*f - c*d) / (a*e - b*d);
        x = round(x * 1000) / 1000;
        y = round(y * 1000) / 1000;
        if(fabs(x) < 1e-8) x = 0;
        if(fabs(y) < 1e-8) y = 0;
        printf("%.3f %.3f\n", x, y);
    }
    return 0;
}

C++: #include <stdio.h>

int main(void){
	int a, b, c, d, e, f;
	double alpha, beta;
	double x, y;
	double ratio;

	while(scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != -1){
		

		ratio = -1 * ((double)d / (double)a);
		alpha = ratio * b;
		beta = ratio * c;
		//printf("%f %f %f\n", ratio, alpha, beta);

		y = (double)(beta + f) / (alpha + e);
		x = (double)(f - e * y) / d;

		if(x == 0){
			x = 0;
		}
		if(y == 0){
			y = 0;
		}

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

	return 0;
}