Go: package main

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

func main() {
        var a, b, c, d, e, f float64
        sc := bufio.NewScanner(os.Stdin)
        for sc.Scan() {
                fmt.Sscanf(sc.Text(), "%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f)

                det := a*e - b*d
                x := (e*c - b*f) / det
                y := (a*f - c*d) / det
                if x == 0.0 {
                        x = math.Abs(x)
                }
                if y == 0.0 {
                        y = math.Abs(y)
                }
                fmt.Printf("%.3f %.3f\n", x, y)
        }
}

C++: #include <cstdio>

using namespace std;

int main()
{
    //freopen("input.txt", "r", stdin);
    int a, b, c, d, e, f;
    while(scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f)==6){
        double x, y;
        x = ((b*f)-(c*e))/((b*d)-(a*e));
        y = (c-(a*x))/b;

        printf("%0.3lf %.3lf\n", x, y);
    }

    return 0;
}

C++: #include <cstdio>

using namespace std;

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

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

C++: #include <stdio.h>

int main(void){
	int a,b,c,d,e,f;
	float x,y;
	while(scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f)!=EOF){
		x=(c*e-b*f)/(a*e-d*b);
		y=(d*c-a*f)/(d*b-a*e);
		x=(2*x+(1/1000))/2;
		y=(2*y+(1/1000))/2;
		printf("%0.3f %0.3f\n",x,y);
	}
}

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

    return 0;
}

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

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

	while (1) {
		cin>>a>>b>>c>>d>>e>>f;
		if (cin.eof()) break;

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

		cout<<setprecision(4)<<setiosflags(ios::fixed)<<x<<" "<<y<<endl;
	}

	return 0;
}

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

auto main () -> int
{
    static const char * zeros [] = {"00" , "00" , "0" , ""};
    double a , b , c , d , e , f;
    while (std::cin >> a >> b >> c >> d >> e >> f)
    {
        auto delta = a * e - b * d;
        auto x = (e * c - b * f) / delta;
        auto y = (- c * d + a * f) / delta;
        auto x_ = std::lround (x * 1000);
        auto y_ = std::lround (y * 1000);
        auto x_high = x_ / 1000;
        auto x_low = std::abs (x_) % 1000;
        auto y_high = y_ / 1000;
        auto y_low = std::abs (y_) % 1000;
        std::cout << x_high << '.' << x_low << zeros [x_low ? static_cast <int> (std::log10 (x_low)) + 1 : 0] << ' '
                  << y_high << '.' << y_low << zeros [y_low ? static_cast <int> (std::log10 (y_low)) + 1 : 0] << std::endl;
    }
}

C++: #include <iostream>

using namespace std;

/*
aX+bY=c
dX+eY=f
*/

void solve(int a, int b, int c, int d, int e, int f) {
	int x = (f - e*c/b) / (d - e*c/b);
	int y = (c - a*x) / b;
	cout << x << " " << y << endl;
}

int main() {
	int a, b, c, d, e, f;
	while (cin >> a >> b >> c >> d >> e >> f) {
		solve(a,b,c,d,e,f);
	}
	return 0;
}

C++: #include<iostream>
#include<cmath>
#include<cstdio>
using namespace std;
int main(){
  double a,b,c,d,e,f;

 
  while( cin>>a>>b>>c>>d>>e>>f){
  
    double x,y;
  
    y=(c*d-a*f)/(b*d-a*e);
    x=(c-b*y)/a;
  
    //cout<<x<<' '<<y<<endl;
    printf("%.3lf %.3lf",x,y);
    cout<<endl;
  }
}

C++: #include<stdio.h>
#include<iostream>
#include<iomanip>

#define REP(i, a) for(int i=0;i<(int)a;++i)
using namespace std;

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

int main() {
    solver();
    return 0;
}

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

using namespace std;

typedef struct {
        double x1;
        double x2;
} answer;

answer solve_simultaneous_equations(double a, double b, double c, double d, double e, double f) {
        answer ans;
        ans.x1 = (c*e - b*f) / (a*e - b*d);
        ans.x2 = (c*d - a*f) / (b*d - a*e);
        return ans;
}

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

        while(cin >> a >> b >> c >> d >> e >> f) {
                answer ans;
                ans = solve_simultaneous_equations(a,b,c,d,e,f);
                cout << showpoint << fixed << setprecision(3) << ans.x1;
                cout << " ";
                cout << showpoint << fixed << setprecision(3) << ans.x2;
                cout << endl;
        }

        return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  double a[2][3];
  while(cin>>a[0][0]>>a[0][1]>>a[0][2]>>a[1][0]>>a[1][1]>>a[1][2]){
    for(int i=0;i<2;i++){
      for(int j=i+1;j<3;j++)
	a[i][j]/=a[i][i];
      a[i][i]=1;
      for(int j=0;j<2;j++){
	if(j==i)continue;
	double t=a[j][i];
	for(int k=i;k<3;k++)
	  a[j][k]-=t*a[i][k];
      }
    }
    printf("%f %f\n",a[0][2],a[1][2]);
  }
  return 0;
}

C++: // ------------------------------------
// Date:2018/ 2/13
// Problem:0004 : SimulataneousEquation 4.cpp
//
// ------------------------------------

#include <bits/stdc++.h>

using namespace std;

#define FOR(i,a,b) for(int i=(int)a;i<(int)b;++i)
#define REP(i,n) FOR(i,0,n)

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

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){
        double x = (e*c - b*f) / (e*a - d*b);
        double y = (a*f - d*c) / (e*a - d*b);
        if(x==0)x=0;
        if(y==0)y=0;
        cout << fixed << setprecision(3) << x << " " << y << endl;
    }

    return 0;
}

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

int main()
{
	std::vector<int> x, y;
	int a, b, c, d, p, q;
	while (scanf("%d %d %d %d %d %d", &a, &b, &p, &c, &d, &q) != EOF)
	{
		x.push_back(d*p - b*q / (a*d - b*c));
		y.push_back(p*c - a*q / (b*c - a*d));
	}

	for (int i = 0; i < x.size(); ++i)
		std::cout << x[i] << " " << y[i] << std::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 >> b >> c >> d >> e >> f){
		x= (double)((e*c-b*f)/(a*e-b*d));
		y= (double)((-d*c)+a*f)/(a*e-b*d);
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}

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


int main(void) {
    double a, b, c, d, e, f;
    double x, y;
    
    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("%.3lf %.3lf", x, y);
        cout << endl;
    }
}