Go: package main

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

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]
		var mulA, mulD int
		if a < 0 {
			mulA = a * -1
		} else {
			mulA = a
		}
		if d < 0 {
			mulD = d * -1
		} else {
			mulD = d
		}
		a *= mulD
		b *= mulD
		c *= mulD
		d *= mulA
		e *= mulA
		f *= mulA

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

		bE := b - e
		cF := c - f
		if bE == 0 {
			bE = 1
		}
		y := cF / bE
		x := (c - (y * b)) / a

		fmt.Print(x)
		fmt.Println(".000")
		fmt.Print(y)
		fmt.Println(".000")
	}
}

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

int main()
{
	std::vector<double> x, y;
	double 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((a*q - c*p) / (a*d - b*c));
	}

	for (int i = 0; i < x.size(); ++i)
		std::cout << x[i] << " " << y[i] << std::endl;
	return 0;
}

C++: #include<iostream>
#include<algorithm>
#include<cstdio>
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 - b*d);
    y = (a*f - c*d)/(a*e - b*d);
    cout<<x<<" "<<y<<endl;
  }
return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
double gcd( double m, double n );
double lcm( double m, double n );
int main(int argc, const char * argv[])
{
    double a=0.0;
    double b=0.0;
    double c=0.0;
    double d=0.0;
    double e=0.0;
    double f=0.0;
    double x=0.0;
    double y=0.0;
    
    while(scanf("%lf",&a)!=EOF){
        scanf("%lf",&b);
        scanf("%lf",&c);
        scanf("%lf",&d);
        scanf("%lf",&e);
        scanf("%lf",&f);
        double ad = lcm( a,d );
        printf("%lf\n",ad);
        
        double a2 = ad/a;
        double b2 = b*a2;
        double c2 = c*a2;
        
        double d2 = ad/d;
        double e2 = e*d2;
        double f2 = f*d2;
        
        y = (c2-f2)/(b2-e2);
        x = (c-b*y)/a;
        
        printf("%.3lf",x);
        printf(" ");
        printf("%.3lf\n",y);
        
    }
    
}
double gcd( double m, double n )
{
	if ( ( 0.0 == m ) || ( 0.0 == n ) )
		return 0;
	while( m != n )
	{
		if ( m > n ) m = m - n;
		else         n = n - m;
	}
	return m;
}

double lcm( double m, double n )
{
	if ( ( 0.0 == m ) || ( 0.0 == n ) )
		return 0;
	
	return ((m / gcd(m, n)) * n);
}

C++: //
//  main.cpp
//  CppTest
//
//  Created by Ryu on 2017/02/08.
//  Copyright ?? 2017??´ Ryu. All rights reserved.
//

#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;

int main(int argc, const char * argv[]) {
    // insert code here...
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    float e[10000][6];
    int n = 0;
    float x[10000], y[10000];
    while (cin >> e[n][0] >> e[n][1] >> e[n][2] >> e[n][3] >> e[n][4] >> e[n][5]) {
        float d = e[n][0] * e[n][4] - e[n][1] * e[n][3];
        x[n] = (e[n][4] * e[n][2] - e[n][1] * e[n][5]) / d;
        y[n] = (0 - e[n][3] * e[n][2] + e[n][0] * e[n][5]) / d;
        //printf("d: %f, x: %.4f, y: %.4f\n", d, x[n], y[n]);
        n++;
    }
    
    
    for(int i = 0; i < n; i++){
        if(x[i] == -0){
            x[i] = 0;
        }
        if(y[i] == -0){
            y[i] = 0;
        }
        printf("%.4f %.4f\n", x[i], y[i]);
    }
    
    
    return 0;
}

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

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);
    cout <<fixed<<setorecision(3)<<x<<" "<<y<<endl;
  }
  return 0;
}

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

void Solve(double a,double b,double c,double d,double e,double f){
    double x,y;

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

    if(x==0)x=0.000;
    if(y==0)y=0.000;

    printf("%4.3f %4.3f\n",x,y);
}
int main(){
    double 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>
using namespace std;

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

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

int main(){
	float a,b,c,d,e,f,i,n;
	while(cin >> a >> b >> c >> d >> e >> f){
		printf("%6.3f %6.3f\n",(c*e-b*f)/(a*e-b*d) ,(c*d-a*f)/(b*d-a*e));
	}
	return 0;
}

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

int main()
{
    double a,b,c,d,e,f;
    double x,y;
    
    while(cin >> a >> b >> c >> d >> e >> f){
        if(b*d - a*e != 0){
         
         double tmp1 = (c*e - b*f),tmp2 = (a*e - b*d),tmp3 = (c*d - a*f),tmp4=(b*d - a*e);
        tmp1 = tmp1/tmp2;
        tmp2 = tmp3/tmp4;
        x = tmp1;
        y = tmp2;
	if(x < 0.0001 && x > -0.0001) x = 0;
	if(y < 0.0001 && y > -0.0001) y = 0;
         printf("%.3f %.3f",x,y);
        }
    }
    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));
        if(x == 0){x = 0;}
        if(y == 0){y = 0;}
        printf("%.3f %.3f\n",x,y);
    }
}

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

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

C++: /*
C++ ???????????????????????????????????¬??????
??????AOJ-ITP1??????????????????
*/
#define _USE_MATH_DEFINES

#include <iostream> // ?¨??????\??????
#include <fstream>  // ??????????????\??????
#include <string>   // ???????????¢???
#include <vector>   // ???????????????
#include <cmath>    // ??°??????
#include <iomanip>  // stream???????????¢???
#include <algorithm>// max??¢??°??????

using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::vector;        // ????´???°????????????????????????
using std::fixed;         // ???????????????????¨???????????????????????????????
using std::setprecision;  // ?????°????°???°?????\???????????°????????????????????¨????????\???

int main() {
	double a, b, p, c, d, q;
	double x, y;

	while (cin >> a >> b >> p >> c >> d >> q)
	{
		x = (p*d - b*q) / (a*d - b*c);
		y = (a*q - p*c) / (a*d - b*c);
		
		cout << fixed << setprecision(5) << x << " " << y << endl;
	}
	return 0;
}

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

using namespace std;

int main(int argc, const char * argv[])
{
    int a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        double x, y;
        x = (c * e - b * f) / (a * e - b * d);
        y = (a * f - c * d) / (a * e - b * d);
        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;
		}
	}
	
	printf("%0.3lf",(f-d*x/1000)/e); //yÌoÍ
}