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 <iostream>
#include <cmath>
#include <cstdlib>
#include <algorithm>
#include <iomanip>

int main(int argc, char const* argv[])
{
	double a, b, c, d, e, f;
	const unsigned precision{3};
	std::cout << std::fixed << std::setprecision(precision);

	std::cin >> a >> b >> c >> d >> e >> f;
	while (!std::cin.eof()) {
		auto x = ( e*c - b*f )/( e*a - d*b );
		auto y = ( d*c - a*f )/( d*b - e*a );
		x = (std::abs(x) < 0.5 / std::pow(10,precision)) ? 0.0 : x;
		y = (std::abs(y) < 0.5 / std::pow(10,precision)) ? 0.0 : y;
		std::cout << x << ' ' << y << std::endl;
		std::cin >> a >> b >> c >> d >> e >> f;
	}
	return 0;
}

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

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

int main(void){
	//cin>>a>>b>>c>>d>>e>>f;
	while(cin>>a>>b>>c>>d>>e>>f){
		double x,y;
		/*
		ax+by=c;
		dx+ey=f;
		ax=c-by;
		x=(c-by)/a;
		d(c-by)/a+ey=f;
		dc/a-dby/a+ey=f;
		-dby/a+ey=f-dc/a;
		(e-db/a)y=f-dc/a;
		y=(f-dc/a)/(e-db/a);
		y=(fa-dc)/(ae-db)
		x=(c-by)/a;
		*/
		y=(f*a-d*c)/(a*e-d*b);
		x=(c-b*y)/a;
		cout<<fixed<<setprecision(3);
		cout<<x<<" "<<y<<endl;
	}
		//cin>>a;
}

C++: #include<iostream>

using namespace std;

int main()
{
	while(1){
		int a[6];
		double detA;
		double ansx, ansy;
		
		for(int i = 0; i < 6; i++){
			cin >> a[i];
			if(a[i] == EOF){
				exit(0);
			}
		}
		
		detA = ((a[0]*a[4])-(a[1]*a[3]));
		
		ansx = ((a[2]*a[4])-(a[1]*a[5]))/detA;
		ansy = ((a[0]*a[5])-(a[2]*a[3]))/detA;
		
		if(ansx == 0){
			ansx = 0;
		}
		if(ansy == 0){
			ansy = 0;
		}
		
		printf("%.4lf %.4lf\n",ansx,ansy);
	}
}

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

int main() {
	int a, b, c, d, e, f; double xNum, xDen, yNum, yDen;
	while (cin >> a >> b >> c >> d >> e >> f) {
		xNum = c * e - b * f; xDen = a * e - b * d;
		yNum = a * f - c * d; yDen = a * e - b * d;
		cout << fixed << setprecision(3)
			<< xNum / xDen + 1e-9 << " " << yNum / yDen + 1e-9 << endl;
	}
	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("%f %f\n",s*d-b*t/a*d-b*c,a*t-s*c/a*d-b*c);
    }
    return 0;
}

C++: #include<iostream>
#include<iomanip>
#include<cmath>
#include<algorithm>
#include<string>
#include<cctype>
#include<vector>
#include<queue>
#include<map>
using namespace std;

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

	while (cin >> a >> b >> c >> d >> e >> f) {
		//a*d-b*c=0:?§£??????
		G = 1 / (a*e - b*d);
		x = G*(e*c + (-b)*f);
		y = G*((-d)*c + a*f);
		cout << fixed << setprecision(3) << x << " " << y << endl;
	}

	return 0;
}

C++:  #include<iostream>
 #include<stdio.h>
 #include<string>
 #include<math.h>
 #include<iomanip>
 #include<algorithm>
 #include<string.h>
 #include<cctype>
 #include<map>
 #include<set>
 #include<vector>
 #include<sstream>
 
 using namespace std;

 int main()
 {
   int a,b,c,d,e,f;
   while(cin>>a>>b>>c>>d>>e>>f)
   {
     double y=1.0*(c*d-f*a)/(b*d-a*e);
     double x=1.0*(c*e-f*b)/(a*e-d*b);
     if(abs(x)<0.000000001) x=0.0;
     if(abs(y)<0.000000001) y=0.0;
     printf("%.3lf %.3lf\n",x,y);            
   }
   //while(1);      
   return 0;    
 }

C++: #include <stdio.h>

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

	while(scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != -1){
		

		ratio = -1 * ((double)d / (double)a);
		alpha = ratio * b;
		beta = ratio * c;
		//printf("%f %f %f\n", ratio, alpha, beta);

		y = (double)(beta + f) / (alpha + e);
		x = (double)(f - e * y) / d;

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

	return 0;
}

C++: #define scanf_s scanf
#include <stdio.h>
#include <iostream>
using namespace std;
#define MAX 200
int main(void)
{
	double a, b, c, d, e, f, x, y;
	while (scanf_s("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f) != EOF) {
		x = (e * c - b * f) / (e * a - b * d);
		y = (d * c - a * f) / (d * b - a * e);
		printf("%.3f %.3f\n", x, y);
	}
}

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;
		x*=1000;
		x+=0.5;
		x=int(x);
		x/=1000;
		y*=1000;
		y+=0.5;
		y=int(y);
		y/=1000;
		cout<<fixed<<setprecision(3)<<x<<" ";
		cout<<fixed<<setprecision(3)<<y<<endl;
	}
	return 0;
}

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

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

C++: #include <iostream>
#include <cstdio>
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);
  }
  return 0;
}

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

int main()
{
	double x, y;
	double a, b, c, d, e, f;
	int J = 1;

	while (J){

		J = (int)(cin >> a >> b >> c >> d >> e >> f);

		if (J == 0)
			break;

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

		x *= 10000;
		x = x + 0.5 - (x < 0);
		x = (int)x;
		x /= 10000;

		y *= 10000;
		y = y + 0.5 - (y < 0);
		y = (int)y;
		y /= 10000;


		cout << setprecision(4) << showpoint << x << " " << y << endl;
	}

	return 0;
}

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

using namespace std;

//?????¨?????\
double round_four(double value){
    //0??????
    if ((static_cast<int>(value + 0.5)) < 1){
        return 0.0;
    }
    //?????????
    value *= 1000;
    value += (value / fabs(value)) * 0.5;
    int nValue = static_cast<int>(value);
    value = static_cast<double>(nValue) / 1000;
    return value;
}

//????¬?????¨?????§£
array<double, 2> comp_linear_equation(int a, int b, int c, int d, int e, int f){
    array<double, 2> result;
    result[0] = static_cast<double>(e * c - (f * b));
    result[1] = static_cast<double>(-(d * c) + a * f);
    double num = 1.0 / ((a * e) - (b * d));
    result[0] *= num;
    result[1] *= num;
    result[0] = round_four(result[0]);
    result[1] = round_four(result[1]);
    return result;
}

//?????????
int main(){
    int a, b, c, d, e, f;
    vector<array<double, 2>> result;
    while (cin >> a >> b >> c >> d >> e >> f){
        result.push_back(comp_linear_equation(a, b, c, d, e, f));
    }
    for (const auto& element : result){
        for (auto num : element){
            cout << fixed << setprecision(3) << num << " ";
        }
        cout << endl;
    }
    return 0;
}

C++: #include <iostream>
#include <stdio.h>
#define EE 0.0000001

using namespace std;
  
int main(void){
    double a,b,c,d,e,f,delta,kai,kait;
    while(1){
	    if( scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&e,&c,&d,&f) == EOF) break;
		delta=a*d-b*c;
		kai=(d*e-b*f)/(delta);
		kait=(a*f-e*c)/(delta);
		if((kai >= 0-EE) && (kai <= 0+EE)) kai = 0.0;
		printf("%.3f %.3f\n",kai,kait);
    }
    return 0;
}

C++: #include<stdio.h>
int main(){
	int X,Y;
double a,b,c,d,e,f,x,y;
double p[2][3]={0};
y=0;x=0;
 while(scanf("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f) != EOF){

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

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