Go: package main

import (
        "fmt"
        "bufio"
        "os"
)

func main() {
        var a, b, c, d, e, f float64
        sc := bufio.NewScanner(os.Stdin)
        for sc.Scan() {
                fmt.Sscanf(sc.Text(), "%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f)

                det := a*e - b*d
                x := (e*c - b*f) / det
                y := (a*f - c*d) / det
                fmt.Printf("%04f %04f\n", x, y)
        }
}

C++: #include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <climits>
#include <cmath>
#include <complex>
#include <map>
#include <set>
#include <vector>
#include <stack>
#include <queue>
#include <bitset>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cassert>
#include <iomanip>
using namespace std;

#define Rep(b, e, i) for(int i = b; i <= e; i++)
#define Repr(e, b, i) for(int i = e; i >= b; i--)
#define rep(n, i) Rep(0, n-1, i)
#define repr(n, i) Repr(n-1, 0, i)
#define all(v) (v).begin(), (v).end()
#define pb(v) push_back(v)
#define uniq(v) (v).erase(unique(all(v)),(v).end())
#define bitcnt(x) __builtin_popcount(x)
#define fst first
#define snd second
#define Pqaz(T) priority_queue<T,vector<T>,greater<T>>
#define Pqza(T) priority_queue<T>
#define put(x) cout << x;
#define putsp(x) cout << x << ' ';
#define putbd cout << "---------------------------------------------" << endl;
#define putln(x) cout << x << endl;
#define debug(x) cerr << #x << "=" << x << endl;
#define ENJYU std::ios::sync_with_stdio(false);std::cin.tie(0);
#define yuiyui 0

typedef long long ll;
typedef unsigned long long ul;
typedef pair<int, int> intP;
typedef pair<ll, ll> llP;
typedef pair<ul, ul> ulP;
typedef complex<double> comp;
typedef vector <int> vec;
typedef vector <ll> vecll;
typedef vector <ul> vecul;
typedef vector <double> vecd;
typedef vector <vec> mat;
typedef vector <vecll> matll;
typedef vector <vecul> matul;
typedef vector <vecd> matd;

//vector の中身を出力
template <class T>ostream &operator<<(ostream &o,const vector<T>&v)
{o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<<v[i];o<<"}";return o;}

const int MAX = 200020;
const double PI = 3.14159265358979323846;
const double EPS = 1e-12;
const int INF = 1<<29;
const ll INFL = 1e18;
const ll MOD = 1e9+7;

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

//********************************template END****************************************//

void solve(void){

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

	while(~scanf("%Lf%Lf%Lf%Lf%Lf%Lf\n", &a,&b,&c,&d,&e,&f))
	{
		long double x = (c*e-b*f)/(a*e-b*d);
		long double y = (c*d-a*f)/(b*d-a*e);

		if (abs(x)<1e4) x = abs(x);
		if (abs(y)<1e4) y = abs(y);

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

	}

}

int main(void)
{
	solve();
	//cout << "yui(*-v・)yui" << endl;
	return yuiyui;
}

C++: //#include <bits/stdc++.h>
#include <iostream>
#include <cstdio>
using namespace std;
#define j bai;
int main() {
	double a, b, c, d, e, y, x, f, bai;
	bool bo = false;
	while (cin >> a >> b >> c >> d >> e >> f) {
		if (a) {
			y = c / b;
			x = f / d - e*y;
		}
		if (b) {
			x = a / c;
			y = f / e - d*x;
		}

		if (d) {
			y = f / e;
			x = c / a - d*y;
		}
		if (e) {
			x = f / d;
			y = f / e - d*x;
		}
		else if (a < d) {
			bai = d / a;
			a *= j;
			b *= j;
			c *= j;
		}
		else {
			bai = a / d;
			d *= j;
			e *= j;
			f *= j;
		}
		if (((a > 0 && d < 0) || (a < 0 && d>0)) && bo == false) {
			y = (c + f) / (b + e);
			x = (c - b*y) / a;
		}
		else if (bo == false) {
			y = (c - f) / (b - e);
			x = (c - b*y) / a;
		}
		if (x == -0.000) {
			x = abs(x);
		}
		if (y == -0.000) {
			y = abs(y);
		}
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}

C++: #include<iostream>
#include<algorithm>
#include<stdio.h>
using namespace std;
int main() {
	double a, b, c, d, e, f, x, y;
	while (!cin.eof()){
		cin >> a >> b >> c >> d >> e >> f;
		a *= e;
		c *= e;
		d *= b;
		f *= b;
		b *= e;
		e = b;
		if (c >= f) {
			x = (c - f) / (a - d);
		}
		else x = (f - c) / (d - a);
		y = (c - a*x) / b;
		printf("%lf %lf\n", x, y);
	}
}

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




  return 0;
}

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

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

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)(c*e - b*f)/(a*e - b*d);
		y = (double)(c*d - a*f)/(b*d - a*e);
		cout << setprecision(3) << setiosflags(ios::fixed);
		cout << x << ' ' << y << endl;
	}
	return 0;
}

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


int main() {
	ios::sync_with_stdio(false);
	int 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);
		cout << fixed << setprecision(3) << x << " " << y;
	}

}

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

double halfadjust(double x){
	int tmp = (x*10000);
	tmp = tmp%10;
	double ans = static_cast<double>(static_cast<int>(x*1000));
	ans = ans/1000;
	if(tmp >= 5)
		ans += 0.001;
	if(tmp <= -5)
		ans -= 0.001;
	return ans;
}

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

void solve(){
	using namespace std;
	double x = (c*e-b*f)/(a*e-b*d);
	double y = (c*d-a*f)/(b*d-a*e);
	cout << setprecision(3) << fixed << halfadjust(x) << ' ';
	cout << halfadjust(y) << endl;
	cout << setprecision(6);
}

int main(){
	using std::cin;
	while(cin >> a&& cin >> b&& cin >> c&& cin >> d&& cin >> e&& cin >> f){
		solve();
	}
	return 0;
}

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

int main() {
	double x,y,a,b,c,d,e,f;
	while(6 == scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&e,&f)){
		x = (-b*f+e*c)/(a*e-b*d);
		y = (f-d*x)/e;
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}

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

int main(){

    double a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f){
        double x = (e*c - b*f) / (e*a - d*b);
        double y = (a*f - d*c) / (e*a - d*b);

        int x2 = x > 0 ? (x * 1000 + 0.5) : (x * 1000 - 0.5);
        int y2 = y > 0 ? (y * 1000 + 0.5) : (y * 1000 - 0.5);

        cout << fixed << setprecision(3) << x2 / 1000.0 << " " << y2 / 1000.0 << endl;
    }

    return 0;
}

C++: #include<stdio.h>
int main(){
	int a,b,c,d,e,f;
	double x,y,z,v;
	while(1){
	scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f);
	x=(double)(c*e-b*f)/(a*e-b*d);
	y=(double)(c*d-a*f)/(b*d-a*e);
	if(x>=-0.0005&&x<0.0005)	x=0;
	if(y>=-0.0005&&y<0.0005)	y=0;
	printf("%.3lf %.3lf\n",x,y);
}
}

C++: #include <iostream>
  
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);
        x *= 1000; x = x + (x > 0 ? 0.5 : -0.5); x = (int)x;
        y *= 1000; y = y + (y > 0 ? 0.5 : -0.5); y = (int)y;
        printf("%.3f %.3f\n", x / 1000, y / 1000);
    }
    return 0;
}

C++: /*
 * AOJ 4
 * Simultaneous Equation (PCK 2003)
 *
 */
#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 = (c*d-f*a) / (b*d-e*a);
	double x = (c - b*y) / a;
	printf("%.3lf %.3lf\n", x, y);
	}
	return 0;
}