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<bits/stdc++.h>
using namespace std;
int main(){
  double a,b,c,d,e,f,a2,b2,c2,ansx,ansy; // ax+by=c  dx+ey=f
  while(cin >> a >> b >> c >> d >> e >> f){
    a2=a;
    b2=b;
    c2=c;

    a/=b; // (a/b)x+y=c
    c/=b; // (a/b)x+y=(c/b)
    a*=(-1); // y=(c/b)-(a/b)x
    c*=e; // dx+e(c)=f
    a*=e; // dx+e(c+ax)=f
    a+=d; // dx+(a*e)x+(c*e)=f
    f-=c; // dx+(a*e)x=f-(c*e)
    ansx=f/a;
    if(ansx > -0.0005 && ansx <= 0){
      printf("0.000 ");
    } else{
      printf("%.3f ",ansx);
    }
 
    a2*=ansx;
    c2-=a2;
    ansy=c2/b2;
    if(ansy >= -0.0005 && ansy <= 0){
      printf("0.000\n");
    } else{
      printf("%.3f\n",ansy);
    }
  }
  return 0;
}

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

int main(){
	double a,b,c,d,e,f;
	while(cin >> a >> b >> c >> d >> e >> f){
		if(a == 0){
			swap(a,d);
			swap(b,e);
			swap(c,f);
		}
		b /= a;
		c /= a;
		a = 1;
		if(d != 0){
			e -= b*d;
			f -= c*d;
			d = 0;
		}
		f /= e;
		e = 1;
		c -= b*f;
		b = 0;
		printf("%.3f %.3f\n",c,f);
	}
}

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

int main(){
	
	double a,b,c,d,e,f ;
	double x,y ;
	
	while(1){
		cin >> a ;
		if( cin.eof() ) break ;
		cin >> b >> c ;
		cin >> d >> e >> f ;
		
		if( a*e - b*d == 0 ){
			cout << "error" << endl ;
		}
		else{
			x = ( c*e - b*f ) / ( a*e - b*d ) + 0.00005 ;
			y = ( a*f - d*c ) / ( a*e - b*d ) + 0.00005 ;
		}
		
		printf("%.3lf %.3lf\n",x ,y) ;
	}
	
return 0 ;
}

/*
ax + by = c
dx + ey = f
*/

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 y=(a*f-c*d)/(a*e-b*d);
    double x=(c-b*y)/a;
    printf("%.3f %.3f\n",x,y);
  }
  

}

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


int main() {
	ios::sync_with_stdio(false);
	double a, b, c, d, e, f;
	
	cin >> a >> b >> c >> d >> e >> f;
	double x = (e*c-b*f)/(a*e-b*d);
	double y = (-c*d+a*f)/(a*e-b*d);
	cout << fixed << setprecision(3) << x << " " << y;
	
	while(cin >> a >> b >> c >> d >> e >> f){
		cout << "\n";
		double x = (e*c-b*f)/(a*e-b*d);
		double y = (-c*d+a*f)/(a*e-b*d);
                if(x==0) x=0;
                if(y==0) y=0;
		cout << fixed << setprecision(3) << x << " " << y;
	}

}

C++: #include<iostream>
#include<stdio.h>
int main(){

    double a,b,c,d,e,f,x,y;
    
    scanf("%d%d%d%d%d%d",&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",x,y);
	
        
	return 0;
}

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

int main(){
	float x, y;
	int a, b, c, d, e, f, p[4], q[4];
	while (true){
		cin >> a >> b >> c >> d >> e >> f;
		if (cin.eof()){
			break;
		}
		if (a == 0){
			y = c / b;
			x = (f - e * y) / d;
		}
		else if (b == 0){
			x = c / a;
			y = (f - d * x) / e;
		}
		else if(d == 0){
			y = f / e;
			x = (c - b * y) / a;
		}
		else if(e==0){
			x = f / d;
			y = (c - a * x) / b;
		}
		else{
			x = (c*e - b*f) / (e*a - b*d);
			y = (c - a*x) / b;
		}
		p[0] = x / 1;
		q[0] = y / 1;
		b = x * 10;
		c = y * 10;
		for (int i = 1;i<4;i++){
			p[i] = (b*10) % 10;
			q[i] = (c*10) % 10;
			x = x * 10;
			y = y * 10;
			b = x;
			c = y;
		}
		cout << p[0] << "." << p[1] << p[2] << p[3] << " " << q[0] << "." << q[1] << q[2] << q[3] << endl;
	}
	return 0;
}

C++: 
#include <stdio.h>
int main(void) {
  float a,b,c,d,e,f;
  while(scanf("%f %f %f %f %f %f",&a,&b,&c,&d,&e,&f)!=EOF){
    printf("%.3f %.3f\n",((f-e*c/b)/(d-e*a/b)),((f-d*c/a)/(e-d*b/a)));
  }
  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){
        y = (a*f-d*c)/(a*e-b*d);
        x = (c-b*y)/a;
        printf("%9f %9f\n", x, y);
    }
}

C++: #include <bits/stdc++.h>
#define int long long
#define ll long long
#define rep(i,n) for(int i=0;i<n;i++)
#define INF (((ll)1<<31)-1)
#define eps LDBL_EPSILON
#define moder (1000000007)
#define pie 3.141592653589793238462643383279
#define P std::pair<int,int>
#define prique priority_queue
#define ggr getchar();getchar();return 0;
using namespace std;
double a,b,c,d,e,f;
signed main(){
    while(cin>>a>>b>>c>>d>>e>>f){
        double ans1=(c*e-b*f)/(a*e-b*d),ans2=(c*d-a*f)/(b*d-a*e);
        if(c*e==b*f)ans1=0;
        if(c*d==a*f)ans2=0;
        if((int)(ans1*10000)%10>=5)ans1=(int)(ans1*1000)+1;
        else ans1=(int)(ans1*1000);
        if((int)(ans2*10000)%10>=5)ans2=(int)(ans2*1000)+1;
        else ans2=(int)(ans2*1000);
        printf("%.3lf %.3lf\n",ans1/1000,ans2/1000);
    }
    ggr;
}

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

using namespace std;

int main(int argc, char* argv[])
{
	double a, b, c, d, e, f;
	double b1, c1, e1, f1;
	double x, y;

	while (cin >> a >> b >> c >> d >> e >> f) {
		b1 = b * d;
		c1 = c * d;
		e1 = e * a;
		f1 = f * a;

		if (b1 == e1) continue;
		y = (c1 - f1) / (b1 - e1);
		x = (c - b * y) / a;
		printf("%.3f %.3f\n", x, y);
	}
	
	return 0;
}

C++: #include <iostream>
#include<string>
#include<cmath>
#include<algorithm>
#include<cctype>
#include<queue>
#include<stack>
#include<stdio.h>
#include<vector>
#include<set>
#include<map>
#include<iomanip>
#define rep(i,n) for(int i=0;i<n;i++)
typedef int long long ll;

using namespace std;
int main(){

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

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

int main(void){
	double a,b,c,d,e,f;
	double x,y;
	cout << fixed;
	cout.precision(3);
	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);
		if(x==0) x=0.0;
		if(y==0) y=0;
		cout << x << " " << y << endl;
	}
	return 0;
}