Go: package main

import "fmt"

func main() {
	var Xs, Ys []float32
	Xs = make([]float32, 0)
	Ys = make([]float32, 0)
	var cnt int
	for {
		var a, b, c, d, e, f, x, y float32
		fmt.Scanf("%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f)
		if a == 0 {
			break
		}
		y = (((a * f) - (d * c)) / ((a * e) - (b * d)))
		x = ((c - (b * y)) / a)
		Xs = append(Xs, x)
		Ys = append(Ys, y)
		cnt++
	}
	for i := 0; i < cnt; i++ {
		fmt.Printf("%.3f %.3f\n", Xs[i], Ys[i])
	}
}

C++: #include <algorithm>
#include <vector>
#include <math.h>
#include <stdio.h>
#include <cctype>
#include <iostream>
#include <set>
#include <string>
#include <queue>
#include <map>
using namespace std;
int size(string x){
	string::size_type size=x.size();
	return size;
}
#define fu(l,k) for(int i=l;i<k;i++)
#define fd(l,k) for(int i=l;i>k;i--)
#define fi first
#define se second
typedef  vector<string> vs;
typedef  vector<int> vi;
double pi(){
	return M_PI;
}
typedef set<int> set_i;
typedef set<string> set_s;
int main(){
	int a,b,c,d,e,f,a1;
	while(cin>>a>>b>>c>>d>>e>>f){
		double det = a*e - b * d;
        double x = 1 / det * (c * e - b * f);
        double y = 1 / det * (f * a - c * d);
		if(x==-0.0) x=0.0;
		if(y==-0.0) y=0.0;
		printf("%.3lf %.3lf\n",x,y);
	}
}

C++: #include<iostream>
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 = (c*d-a*f)/(b*d-a*e);

		cout << x << " " << y << endl;
	}

	return 0;
}

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

int main(int, char**)
{
	double a, b, c, d, e, f = 0;
	while (std::cin >> a >> b >> c >> d >> e >> f)
	{
		double y = std::roundl((c * (a - d) - a * (c - f)) / (b * (a - d) - a * (b - e)) * 1000.0) / 1000.0;
		double x = std::roundl(((c - f) - (b - e) * y) / (a - d) * 1000.0) / 1000.0;
		printf("%.3f %.3f\n", x + 0, y + 0);
	}
}

C++: #include <cstdio>

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

C++: #include <stdio.h>
int main(void){
    float a,b,c,d,s,t;
    while(~scanf("%f%f%f%f%f%f",&a,&b,&s,&c,&d,&t)){
        printf("%.3f %.3f\n",(s*d-b*t)/(a*d-b*c),(a*t-s*c)/(a*d-b*c));
    }
    return 0;
}

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

int main() {
	// your code goes here

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

  while(cin >> a >> b >> c >> d >> e >> f ){

    double y = (a*f-c*d)/(a*e-d*b);
    if(y == 0.0){
      y = 0;
    }

    double x = (c-b*y)/a;
    if(x == 0){
      x = 0;
    }

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

  }
	return 0;
}

C++: #include<stdio.h>
int main(void){
	double a,b,c,d,e,f;
	double A,B,C,D,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=a*e;
		F=a*f;
		y=(C-F)/(B-E);
		A=a*e;
		C=c*e;
		D=b*d;
		F=b*f;
		x=(C-F)/(A-D);
		printf("%1.3lf %1.3lf\n",x,y);
	}
	return 0;
}

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

int main() {
  float a,b,c,d,e,f;
  float x,y;
  while(std::cin >> a >> b >> c >> d >> e >> f) {
    y = (c - (f * (a / d))) / (b - (e * (a / d)));
    x = (c - (b * y)) / a;
    if(x == 0) {x = 0.000;}
    if(y == 0) {y = 0.000;}
    std::cout << std::fixed << std::setprecision(3) << x << " " << y << std::endl;
  }

  return 0;
}

C++: #include <iostream>
#include <vector>
#include <fstream>
#include <algorithm>
#include <iomanip>
#include <map>
#include <queue>
#include <stack>
#include <set>
#include <ctime>
#include <iterator>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
using namespace std;


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

C++: #include <bits/stdc++.h>

#define REP(i, n) for (int i = 0; i < (n); i++)
#define FOR(i, init, n) for(int i = init; i < (n); i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define fi first
#define se second

using namespace std;
using ll = long long int;
using P = pair<int, int>;
using T = tuple<int, int, int>;
using edge = struct
{
    int to, cost;
};

const int MOD = 1e9 + 7;
const int iINF = 1e9;
const long long int llINF = 1e18;
const double PI = acos(-1.0);

const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);

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

        if(x > -0.0001)
        {
            x = 0.0000;
        }
        
        if(y > -0.0001)
        {
            y = 0.0000;
        }


        printf("%.4lf %.4lf\n", x, y);
    }

    
    return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <math.h>
using namespace std;
int main(){
    double a , b , c , d , e , f;
    while(cin >> a >> b >> c >> d >> e >> f){
        double t = a;
        a = a*d;
        b = b*d;
        c = c*d;
        d = d*t;
        e = e*t;
        f = f*t;
        double g = b-e;
        double h = c-f;
        double y = h/g;
        double x = (c- b*y) / a ;
        if( x==0 )
            x = fabs(x);
        if( y==0 )
            y = fabs(y);
        x = x * 1000;
        x = round(x);
        x = x/1000;
        y = y*1000;
        y = round(y);
        y = y/1000;
        printf("%.3lf %.3lf\n" , x  , y );
    }
}

C++: #include<iostream>
#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 = (a*f - c+d)/(a*e - d*b);
    y = (c -b*y)/a;
    printf("%.3f %.3f",x,y);
  }
}

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

int gcm(int a,int b){
	int c=a%b;
	while(c!=0){
		a=b;
		b=c;
		c=a%b;
        }
	return b;
}

int main(){
	int x[2],y[3],sum[3];
	double ans[2];
	while(cin>>x[0]>>y[0]>>sum[0]>>x[1]>>y[1]>>sum[1]){
		if(x[0]==0){
			ans[1]=(double)sum[0]/y[0];
			ans[0]=(sum[1]-y[1]*ans[1])/x[1];
		}else if(x[1]==0){
			ans[1]=(double)sum[1]/y[1];
			ans[0]=(sum[0]-y[0]*ans[1])/x[0];
		}else if(y[0]==0){
			ans[0]=(double)sum[0]/x[0];
			ans[1]=(sum[1]-x[1]*ans[0])/y[1];
		}else if(y[1]==0){
			ans[0]=(double)sum[1]/x[1];
			ans[1]=(sum[0]-x[0]*ans[0])/y[0];
		}else{
			y[2]=y[0]*x[1]-y[1]*x[0];
			sum[2]=sum[0]*x[1]-sum[1]*x[0];
			ans[1]=(double)sum[2]/y[2];
			ans[0]=(sum[0]-y[0]*ans[1])/x[0];
		}
		printf("%.3f %.3f\n",ans[0],ans[1]);
	}
	return 0;
}

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

static double
round3(double r)
{
	r *= 1000.0;
	r = round(r);
	r /= 1000.0;
	
	if (r == -0) {
		r = 0;
	}
	
	return r;
}

int
main(void)
{
	char line[80];
	double a;
	double b;
	double c;
	double d;
	double e;
	double f;
	double x;
	double y;

	while (gets(line)) {
		if (sscanf(line, "%lf %lf %lf %lf %lf %lf",
				   &a, &b, &c, &d, &e, &f) == 6) {
			x = (e*c  -b*f)/(a*e - b*d);
			y = (d*c - a*f)/(d*b - a*e);
			
			printf("%.3f %.3f\n", round3(x), round3(y));
		}
	}

	return 0;
}

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;
double rmat[2][2];

int main()
{
	while( cin >> a >> b >> c >> d >> e >> f, !cin.eof())
	{
		double delta = 1/(a*e - b*d);

		rmat[0][0] = delta*e;
		rmat[0][1] = -delta*b;
		rmat[1][0] = -delta*d;
		rmat[1][1] = delta*a;


		x = c*rmat[0][0] + f*rmat[0][1];
		y = c*rmat[1][0] + f*rmat[1][1];

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

	}

	return 0;
}