Go: package main

import (
	"fmt"
)

func main() {
	for {
		var a, b, c, d, e, f float64
		i, _ := fmt.Scan(&a, &b, &c, &d, &e, &f)
		if i == 0 {
			break
		}

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

		fmt.Printf("%.3f %.3f\n", x, y)
	}
}

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

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

/*
??£???????¨????
	ax + by = c
	dx + ey = f
????§£x, y???????????????????????°??????
*/
int main() {
	double a, b, c, d, e, f;
	int cnt = 0;						//??\??????????????£???????¨????????????°
	std::vector<double> x_vector;		//x????§£???????´?
	std::vector<double> y_vector;		//y????§£???????´?

#if 0
	while (cnt < 2) {
		cin >> a >> b >> c >> d >> e >> f;
#else
	while (cin >> a >> b >> c >> d >> e >> f) {
#endif
		double x = (b * f - c * e) / (b * d - a * e);
		double y = (c * d - a * f) / (b * d - a * e);

		cnt++;
		x_vector.push_back(x);
		y_vector.push_back(y);
	}

	for (unsigned int i = 0; i < cnt; i++) {
		double x_result = std::round(x_vector[i] * 1000) / 1000;
		double y_result = std::round(y_vector[i] * 1000) / 1000;

		std::cout << std::fixed;
		std::cout << std::setprecision(3) << x_result << " ";
		std::cout << std::setprecision(3) << y_result << endl;
	}

	//???????????°
	//while (1);

	return 0;
}

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

int main() {
	double a,b,c,d,e,f;
	while(cin>>a>>b>>c>>d>>e>>f){
    	double x,y;
    	x=(b*f-e*c)/(b*d-a*e);
    	y=(a*f-c*d)/(a*e-b*d);
    	if(x==0)x=0;
    	if(y==0)y=0;
    	printf("%.3lf %.3lf\n",x,y);
	}
	// your code goes here
	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 (true)
	{
		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(4) << x << " " << y << endl;
	}
	return 0;
}

C++: #include<iostream>
#include<iomanip>
#define x_Formula(a,b,c,d,e,f) (c-(b*f)/e)/(a-(b*d)/e);
#define y_Formula(x,a,b,c) (c-(a*x))/b;

using namespace std;

double x;
double y;

void serch()
{
	int xx,yy;
	xx=x*1000;
	yy=y*1000;
//	cout << xx << " " << yy << endl;
	if(xx>0)
		xx+=5;
	else
		xx-=5;
	if(yy>0)
		yy+=5;
	else
		yy-=5;
	x=xx/1000;
	y=yy/1000;
//	cout << xx << " " << yy << endl;

}
int main()
{
	double num[6];
	int i;
	
	for(;cin >> num[0];)
	{
		for(i=1;i<6;i++)
		{
			cin >> num[i];
		}
		
		if(num[0]!=0 && num[1]!=0 && num[2]!=0 && num[3]!=0 && num[4]!=0 && num[5]!=0)
		{
			x=x_Formula(num[0],num[1],num[2],num[3],num[4],num[5])
			y=y_Formula(x,num[0],num[1],num[2])
		}
		if(num[0]==0)
		{
			y=num[2]/num[1];
			x=(num[5]-num[4]*y)/num[3];
		}
		else if(num[1]==0)
		{
			x=num[2]/num[0];
			y=(num[5]-num[3]*x)/num[4];
		}
		else if(num[3]==0)
		{
			y=num[5]/num[4];
			x=(num[2]-num[1]*y)/num[0];
		}
		else if(num[4]==0)
		{
			x=num[5]/num[3];
			y=(num[2]-num[0]*x)/num[1];
		}
		
		cout << setprecision(3);
		cout << setiosflags(ios::scientific);
		cout << fixed ;
		serch();
		cout << x << " " << y << endl;
	}
}

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++: // includes
#include <cstdio>
#include <cstdint>
#include <iostream>
#include <iomanip>
#include <string>
#include <queue>
#include <stack>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <algorithm>
#include <utility>
#include <functional>
#include <cmath>
#include <climits>
#include <bitset>

// macros
#define ll long long int
#define pb push_back
#define mk make_pair
#define pq priority_queue
#define FOR(i, a, b) for(int i=(a); i<(b);++i)
#define rep(i, n) FOR(i, 0, n)

using namespace std;

//  types
typedef pair<int, int> P;
typedef pair<ll, int> Pl;
typedef pair<ll, ll> Pll;
 
// constants
const int inf = 1e9;
const ll linf = 1LL << 50;
const double EPS = 1e-10;

// solve

int main(int argc, char const* argv[])
{
  double a, b, c, d, e, f;
  while(cin >> a){
    cin >> b >> c >> d >> e >> f;
    double det = a * e - b * d;
    cout << setprecision(3);
    cout << double((ll)((e * c - b * f) / det * 1000) / 1000.);
    cout << " ";
    cout << double((ll)((- d * c + a * f) / det * 1000) / 1000.) << endl;
  }
	return 0;
}

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

int main(void) {
	int a, b, c, d, e, f;
	double x, y;
	while (scanf("%d%d%d%d%d%d", &a, &b, &c, &d, &e, &f) != EOF) {
		x = (double)(c*e - b*f) / (a*e - b*d);
		y = (double)(c*d - a*f) / (b*d - a*e);
		if (fabs(x) < 1e-3) x = 0;
		if (fabs(y) < 1e-3) y = 0;

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

C++: #include<iostream>
#include<cstdio>
using namespace std;
int main(){
	double a,b,c,d,e,f,x,y;
	int i,j,k;
	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 <cstdio>
using namespace std;

int main()
{
	int a, b, c, d, e, f;
	cout << showpoint << setprecision(3);
	while (cin >> a >> b >> c >> d >> e >> f){
		double x = ((double)(b*f - c*e)) / (double)(b*d - a*e);
		double y = ((double)(c*d - a*f)) / (double)(b*d - a*e);
		//cout << x << ' ' << y << "\n";
		//cout << ((double)(b*f - c*e)) / (double)(b*d - a*e) << ' ' << ((double)(c*d - a*f)) / (double)(b*d - a*e) << "\n";
		printf("%.3f %.3f\n", x, y);
	}
	cout.flush();
}

C++: #include<iostream>
#include<algorithm>
#include<stdio.h>
using namespace std;
int main(){
	int a,b,c,d,e,f;
	int o,p,q,r,s,t;
	float x,y;
	while(scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f)!=EOF){
		o=a;p=b;q=c;r=d;s=e;t=f;
		o*=d;p*=d;q*=d;
		r*=a;s*=a;t*=a;
		//printf("%d %d %d %d %d %d \n",o,p,q,r,s,t);
		p-=s;
		q-=t;
		y=(float)(q/p);
		int g=(int)(e*y);
		g*=-1;
		x=(float)((f+g)/d);
		printf("%.3 %.3f",x,y);
	}
}

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

int main(void){
	int a,b,c,d,e,f;
	a=b=c=d=e=f=0;
	float x=0.0f;
	float y=0.0f;
	while(scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != EOF){
		x = (c*e-f*b)/(float)(a*e-b*d);
		y = (c*d-f*a)/(float)(b*d-e*a);
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}

C++: #include<stdio.h>

int main(){
double a=100;
a/=0;
return 0;
}