Go: package main

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

func gcd(num1, num2 int) int {
	if num2 == 0 {
		return num1
	}
	num3 := num1 % num2
	return gcd(num2, num3)
}

func lcm(num1, num2 int) int {
	if num1%num2 != 0 {
		num3 := gcd(num1, num2)
		for i := 1; ; i++ {
			check := num3 * i
			if check%num1 == 0 && check%num2 == 0 {
				return check
			}
		}
	} else {
		return num1
	}
}

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	for scanner.Scan() {
		strNums := strings.Fields(scanner.Text())
		nums := []int{}
		for _, strNum := range strNums {
			num, _ := strconv.Atoi(strNum)
			nums = append(nums, num)
		}
		a := nums[0]
		b := nums[1]
		c := nums[2]
		d := nums[3]
		e := nums[4]
		f := nums[5]
		lcm := lcm(a, d)
		mulA := lcm / a
		mulD := lcm / d
		a *= mulA
		b *= mulA
		c *= mulA
		d *= mulD
		e *= mulD
		f *= mulD

		if d < 0 {
			d *= -1
			e *= -1
			f *= -1
		}

		bE := b - e
		cF := c - f
		y := float64(cF) / float64(bE)
		x := (float64(c) - (y * float64(b))) / float64(a)

		if x == 0 {
			fmt.Printf("%.3f ", 0.0)
		} else {
			fmt.Printf("%.3f ", x)
		}
		if y == 0 {
			fmt.Printf("%.3f\n", 0.0)
		} else {
			fmt.Printf("%.3f\n", y)
		}
	}
}

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

int main() {
  int a, b, c, d, e, f;
  std::cout.precision(3);
  std::cout << std::fixed;
  while (!std::cin.eof()) {
    std::cin >> a >> b >> e >> c >> d >> f;

    double factor = a * d - b * c;
    double x = ( d * e + -b * f) / factor;
    double y = (-c * e +  a * f) / factor;
    if (x == 0.0) { x = 0.0; }
    if (y == 0.0) { y = 0.0; }
    std::cout << x << ' ' << y << std::endl;

    while (isspace(std::cin.peek())) { std::cin.ignore(); }
  }
}

C++: #include<iostream>
#include<string>
#include<iomanip>
using namespace std;
int main(){
	double x,y,a,b,c,d,e,f;
	while(cin>>a>>b>>c>>d>>e>>f){
		x=(c-(b*f/e))/(a-(b*d/e));
		y=(c-a*x)/b;
		cout<<fixed<<setprecision(5)<<x<<endl;
		cout<<fixed<<setprecision(5)<<y<<endl;
	}
	return 0;
}

C++: #include <cstdio>
int main (int argc, char *argv[]) {
    using namespace std;
    int a, b, c, d, e, f;
    while (EOF != fscanf(stdin, "%d %d %d %d %d %d\n", &a, &b, &c, &d, &e, &f)) {
        float tmp1 = static_cast<float>(f)-(static_cast<float>(c)*static_cast<float>(d)/static_cast<float>(a));
        float tmp2 = static_cast<float>(e)-(static_cast<float>(b)*static_cast<float>(d)/static_cast<float>(a));
        float y = tmp1/tmp2;
        float x = (static_cast<float>(c) - static_cast<float>(b) * y) / static_cast<float>(a);
        printf("%.3f %.3f\n", x, y);        
        //printf("y=%f\n", (f-(c*d/a))/(e-(b*d/a)));
    }
    return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main()
{
    double a,b,c,d,e,f,x,y,z;

    while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f)!=EOF)
          {
              z=(a*e)-(b*d);
                x=((c*e)-(b*f))/z;
                y=((a*f)-(d*c))/z;

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

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

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

	
	while (∼scanf( "%d%d%d%d%d%d" ,&a,&b,&c,&d,&e,&f) )
	
	{
		double y=(double)(c*d-a*f)/(double)(b*d-a*e);
		if(a!=0)
		
		printf("%.3f %.3f\n",(c-b*y)/a,y);
		else
		printf("%.3f %.3f\n",(f-e*y)/d,y);
	}

    return 0;
    
    }

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

void solve_SE(double* x, double a, double b, double c, double d, double e, double f)
{
    x[0] = (c * e - f * b) / (a * e - d * b);
    x[1] = (c * d - f * a) / (b * d - e * a);
}

int main()
{
    double a, b, c, d, e, f;
    double x[2];
    while (cin >> a >> b >> c >> d >> e >> f) {
        solve_SE(&x[0], a, b, c, d, e, f);
        for (int i = 0; i < 2; i++) {
            x[i] *= 1000;
            if (x[i] > 0)
                x[i] += 0.5;
            else 
                x[i] -= 0.5;
            x[i] = static_cast<int>(x[i]) / 1000;
        }
        cout << fixed << setprecision(3) << x[0] << ' ' << x[1] << endl;
    }
}

C++: ///BISMILLAHIR RAHMANIR RAHMIM
#include <bits/stdc++.h>
using namespace std;

int main ()
{
    ///freopen("input.txt","r",stdin);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    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-b*d);
        y=(a*f-c*d)/(a*e-b*d);
        if (x==0.000 && y!=0.000)
            printf("0.000 %.3lf\n",y);
        else if(x!=0.000 && y==0.000)
            printf("%.3lf %0.000\n",x);
        else
            printf("%.3lf %.3lf\n",x,y);
    return 0;
}
}

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

int main() {

//変数の宣言

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

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

C++: const int tt = 10000;

#include<iostream>
#include<string>
#include<sstream>
using namespace std;

string toStr(int n);
string intToString(int n);

int main() {
  int a, b, c, d, e, f;
  
  while(cin >> a >> b >> c >> d >> e >> f) {
    c = c * tt;
    f = f * tt;

    int det = a * e - b * d;

    int x = ( e * c - b * f) / det;
    int y = (-d * c + a * f) / det;
//    cout << x << y << endl;

    cout << toStr(x) << " " << toStr(y) << endl;
  }
}

string toStr(int n) {
  string pm, val;
  
  if (n < 0) {
    pm = "-";
    n = -n;
  } else {
    pm = "";
  }

  int ipart = n / tt;
  int fpart = (n - ipart * tt) + tt + 5;

  val = pm + intToString(ipart) + "." + intToString(fpart).substr(1, 3);
  return val;
}

string intToString(int n) {
  stringstream ss;
  ss << n;
  return ss.str();
}

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