Go: package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var out = bufio.NewWriter(os.Stdout)

func main() {
	sc.Split(bufio.ScanWords)
	defer out.Flush()
	for {
		data := nextInts(6)
		fmt.Printf("%.3f\n", Round(GetX(data[0], data[1], data[2], data[3], data[4], data[5]), 3))
		fmt.Printf("%.3f\n", Round(GetY(data[0], data[1], data[2], data[3], data[4], data[5]), 3))
	}
}

func GetX(a, b, c, d, e, f float64) float64 {
	return float64(((c * e) - (b * f)) / ((a * e) - (b * d)))
}

func GetY(a, b, c, d, e, f float64) float64 {
	return float64(((c * d) - (a * f)) / ((b * d) - (a * e)))
}

func Round(f float64, places int) float64 {
	shift := math.Pow(10, float64(places))
	return math.Floor(f*shift+.5) / shift
}

func next() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() float64 {
	a, _ := strconv.Atoi(next())
	return float64(a)
}

func nextInts(n int) []float64 {
	a := make([]float64, n)
	for i := 0; i < n; i++ {
		a[i] = nextInt()
	}
	return a
}

C++: #include <iostream>
#include <algorithm>
#include <cstdio>
#include <string>
#include <sstream>
#include <cstdlib>
#include <cmath>
 
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 - f * b) / (a * e - d * b);
    	y = (a * f - d * c) / (a * e - d * b);
    	if(abs(x) < 0.0001) x = 0;
    	if(abs(y) < 0.0001) y = 0;
    	printf("%.3f %.3f\n", x, y);
    }
    return 0;
}

C++: #include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <iomanip>
#include <cassert>
using namespace std;

#define GET_ARG(a,b,c,F,...) F
#define REP3(i,s,e) for (i = s; i <= e; i++)
#define REP2(i,n) REP3 (i,0,(int)(n)-1)
#define REP(...) GET_ARG (__VA_ARGS__,REP3,REP2) (__VA_ARGS__)
#define RREP3(i,s,e) for (i = s; i >= e; i--)
#define RREP2(i,n) RREP3 (i,(int)(n)-1,0)
#define RREP(...) GET_ARG (__VA_ARGS__,RREP3,RREP2) (__VA_ARGS__)
#define DEBUG(x) cerr << #x ": " << x << endl

int main(void) {
    int a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        double det = a * e - b * d;
        int x = e * c - b * f;
        int y = a * f - d * c;
        cout << fixed << setprecision(3);
        if (x == 0) cout << 0 << " ";
        else cout << x / det << " ";
        cout << fixed << setprecision(3);
        if (y == 0) cout << 0 << endl;
        else cout << y / det << endl;
    }
    return 0;
}

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

C++: #include<iostream>
#include<string>
#include<cmath>
#include<queue>
#include<vector>
#include<functional>
#include<algorithm>
#include<cstdio>
using namespace std;
int main() {
	int a, b, c, d, e, f;
	while (cin >> a >> b >> c >> d >> e >> f) {
		int a2 = a, b2 = b, c2 = c;
		int g = a, h = d;
		if (g > h) swap(g, h);
		while (g != 0) {
			int k = g;
			g = h%g;
			h = k;
		}
		h = (h*(a / h)*(d / h));
		b = b*(h / a);
		c = c*(h / a);
		e = e*(h / d);
		f = f*(h / d);
		long double ansx = ((long double)(f - c) / (e - b)), ansy;
		ansy = (c2 - ansx*b2) / a2;
		printf("%LF %LF", ansy, ansx);
		cout << endl;
	}
}

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

void solv(
	double a,
	double b,
	double c,
	double d,
	double e,
	double f,
	double & x,
	double & y){
	y = (f - (d*c)/a)/(e - (b*d)/a);
	x = (c - b*y)/a;
}

int main(){
	std::vector<std::pair<double, double>> ans;

	double a,b,c,d,e,f;
	std::pair<double, double> tmp;

	while(true){
		std::cin >> a >> b >> c >> d >> e >> f;
		if(std::cin.eof() == true) break;
		solv(a,b,c,d,e,f,
			tmp.first, tmp.second);
		ans.push_back(tmp);
	}

	for(auto && a : ans){
		printf("%0.4f %0.4f\n", a.first, a.second);
	}
}

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){     
	  cout<<fixed<<setprecision(3);
	  cout <<(e*c - b*f) / (a*e - b*d) << " " << (a*f - d*c) / (a*e - b*d) << endl;
	}

    return 0;
}

C++: #include<iostream>
#include<iomanip>
#include<cstdio>
#define eps 1e-9
using namespace std;

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

    while(cin>>a>>b>>c>>d>>e>>f){
        x = ((e*c)-(b*f))/((a*e) - (b*d)) *1.0;
        y = ((a*f) - (c*d))/((a*e) - (b*d)) *1.0;

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

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

using namespace std;

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

int main(){
	while (1){
		cin >> a >> b >> c >> d >> e >> f;
		y = (c - f*a / d) / (b - e*a / d);
		x = -b / a*y + c / a;
		printf("%.3lf %.3lf\n", x, y);
	}
}

C++: #include <iostream>
#include <vector>
#include <algorithm>
#include <cstdio>
#define rep(x,to) for(x=0;x<to;x++)
#define rep2(x,from,to) for(x=from;x<to;x++)

using namespace std;


int main(void){

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

C++: #include <iostream>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <numeric>
#include <string>
#include <vector>
#include <list>

#include <cstdio>

#define DIM 2

typedef std::vector<double> Vec;
typedef std::vector<Vec> Mat;
typedef std::pair<Mat,Vec> Eq;

int main(void){
	using namespace std;

	list<Eq> input;

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

	cout << fixed << setprecision(3);

	while(cin >> a >> b >> c >> d >> e >> f){
		Vec m1, m2;
		m1.push_back(a);
		m1.push_back(b);
		m2.push_back(d);
		m2.push_back(e);

		Vec vec;
		vec.push_back(c);
		vec.push_back(f);

		Mat mat;
		mat.push_back(m1);
		mat.push_back(m2);

		Eq eq = make_pair(mat,vec);

		input.push_back(eq);
	}

	for(auto itr = input.begin(); itr!=input.end(); ++itr){
		auto mat = itr->first;
		auto vec = itr->second;

		Vec output(DIM);

		auto det = mat[0][0] * mat[1][1] - mat[0][1] * mat[1][0];
		std::transform(vec.begin(), vec.end(),vec.begin(), std::bind1st(multiplies<double>(),1.0/det));

		mat[0][1] = -mat[0][1];
		mat[1][0] = -mat[1][0];
		swap(mat[0][0],mat[1][1]);

		for (int i=0; i<DIM; i++){
			output[i] = inner_product(vec.begin(), vec.end(), mat[i].begin(), 0);
		}

		// cout << output[0] << " " << output[1];
		printf("%.3f %.3f\n",output[0],output[1]);
	}

}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){

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

  cin >> a >> b >> c >> d >> e >> f;
  
  if(c*e==f*b||a*e==d*b) printf("0.000 ");
  else printf("%.3f ",(c*e-f*b)/(a*e-d*b));
  if(c*d==f*a||b*d==e*a) printf("0.000\n");
  else printf("%.3f\n",(c*d-f*a)/(b*d-e*a));

  return (0);
}

C++: #include<iostream>

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

int main()
{
	while(std::cin>>a>>b>>c>>d>>e>>f)
	{
		double x = (e*c-b*f)/(a*e-b*d);
		double y = (-d*c+a*f)/(a*e-b*d);
		printf("%8.3f %8.3f\n",x,y);
	}
	return 0;
}

C++: //Simultaneous Equation

#include <iostream>
#include <cstdio>
#include <cassert>
#include <cmath>
#include <cfloat>

namespace {

inline bool is_nearly_zero(double x)
{
  if (abs(x) < DBL_EPSILON)
    return true;
  else
    return false;
}

}

int main()
{
  while (1) {
    double x, y;
    double a, b, c, d, e, f;
    std::cin >> a >> b >> c >> d >> e >> f;
    if (std::cin.fail()) break;

    const double det = (a * e) - (b * d);
    assert(!is_nearly_zero(det));

    const double inv_mat[2][2] = {
    	{e, -b},
    	{-d, a}
    };

    x = ((inv_mat[0][0] * c) + (inv_mat[0][1] * f)) / det;
    y = ((inv_mat[1][0] * c) + (inv_mat[1][1] * f)) / det;

	if (is_nearly_zero(x)) x = 0.0;
	if (is_nearly_zero(y)) y = 0.0;
	
    printf("%.3f %.3f\n", x, y);
  }

  return 0;
}