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 <vector>
#include <algorithm>
#include <queue>
#include <stdio.h>
using namespace std;

int main() {
    clock_t cTimeStart, cTimeEnd;
    cTimeStart = clock();           // 現在時刻
    float a,b,c,d,e,f ;
    float x,y;
    while(cin>>a>>b>>c>>d>>e>>f){
    	x=(f*b-e*c)/(b*d-e*a);
       	y=(f*a-d*c)/(e*a-b*d);
       	printf("%.3f %.3f\n",x,y);
    }

    cTimeEnd = clock();           // 現在時刻
//    cout<< "処理時間:" <<(cTimeEnd - cTimeStart)/1000 << "[ms]" << endl;

	return 0;
}

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){

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

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

		x = round(x);
		y = round(y);

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

	}

}

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

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 = static_cast<int>((c*e-b*f)/(a*e-b*d)*1000+0.5)*0.001;
		double y = static_cast<int>((c*d-a*f)/(b*d-a*e)*1000+0.5)*0.001;
		printf("%.3f %.3f\n", x, y);
	}
}

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

using namespace std;

int main()
{
	float a, b, c, d, e, f;
	float copya, copyb, copyc;
	float odd;//倍率
	float x, y;

	while (cin >> a >> b >> c >> d >> e >> f)
	{
		copya = a, copyb = b, copyc = c;

		odd = a / d;

		d *= odd, e *= odd, f *= odd;

		a -= d, b -= e, c -= f;

		y = c / b;
		x = (copyc - copyb*y) / copya;

		cout << fixed << setprecision(3);
		cout << x << " " << y << endl;

	}


	return 0;
}

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

using namespace std;

int main(int argc, char const* argv[])
{
	double a,b,c,d,e,f,x,y;

	while(cin >> a >> b >> c >> d >> e >> f){
		double det = 1/(a * e - b * d);

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


		x *= 1000;
		y *= 1000;
		x = int( x+.5-(x<0) );
		y = int( y+.5-(y<0) );
		y /= 1000;
		x /= 1000;
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}

C++: #include <iostream>

using namespace std;

#define EPS 1e-9

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

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



	return 0;
}

C++: #include <stdio.h>

int main(void){
	float a,b,c,d,e,f;


	while(scanf("%f%f%f%f%f%f",&a,&b,&c,&d,&e,&f)!=EOF)
		printf("%.3f %.3f\n",(e*c-b*f)/(a*e-b*d),(-d*c+a*f)/(a*e-b*d));

	return 0;
}

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

using namespace std;

double delta(double o, double p, double q , double r, double s, double t) {

	//cout << "o=" << o << "s=" << s << "v=" << "r=" << "o*s-p*r=" << (o*s-p*r)  << endl;

	// |o  p ||x|   |q|
	// |r  s ||y| = |t|

	return (o*s-p*r);//a???o b???p c???q d???r e???s f???t
}

double deltacfbe(double o, double p, double q , double r, double s, double t) {

	//cout << "o=" << o<< "s=" << s << "p=" << "r=" << "q*s-p*t=" << q*s-p*t  << endl;

	// x = |q  p | /delta
	//     |t  s | 

	return (q*s-p*t);
}

double deltaadcf(double o, double p, double q , double r, double s, double t) {

	//cout << "o=" << o<< "s=" << s << "p=" << "r=" << "o*t-q*r=" << o*t-q*r  << endl;

	// y = |o  q | /delta
	//     |r  t | 

	return (o*t-q*r);
}

int main() {

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

	cout.showpoint;



	cout << fixed << setprecision(3) << (deltacfbe(a,b,c,d,e,f)/delta(a,b,c,d,e,f))  << " " << (deltaadcf(a,b,c,d,e,f)/delta(a,b,c,d,e,f)) << endl;
	
	}

	return 0;
}

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

int main(){

    int 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);
        cout << fixed << setprecision(3) << x << " " << y;
    }

    return 0;
}

C++: #include<iostream>
#include<algorithm>
#include<complex>
#include<iomanip>
using namespace std;
int main(){
	double a,b,c,d,e,f;
	int t=80000;
	for(int i=t;i;i--){
		for(int j=i;j;j--){
			if(i+j==2)a=0.0;
		}
	}
	while(cin>>a){cin>>b>>c>>d>>e>>f;
		cout<<fixed<<setprecision(3)<<abs((c*e-b*f)/(a*e-b*d))<<" ";
		cout<<fixed<<setprecision(3)<<abs((c*d-a*f)/(b*d-a*e))<<endl;
	}
	return 0;
}

C++: #include<iostream>
#include<cstdio>
#include<vector>
#include<string>
#include<algorithm>

#define doubled( x ) (x * x)

//?????????????¨????(2 * 2??£?????????)
int matrix_val(int a11, int a12, int a21, int a22);

//?????°?????°?????? (in:??´??° out:?????°)
int digit_count(int num);

using namespace std;

int main()
{
	int a, b, c, d, e, f;
	
	while(1)
	{
		cin >> a >> b >> c ;
		cin >> d >> e >> f ;
		
		int ans_x = matrix_val(c, b, f, e) / matrix_val(a, b, d, e);
		int ans_y = matrix_val(a, c, d, f) / matrix_val(a, b, d, e);
		
		cout << ans_x << ans_y << endl;
	}
	return 0;
}

int matrix_val(
int a11, int a12,
int a21, int a22
){
	return ((a11 * a22) - (a12 * a21));
}

int digit_count(int num)
{
	if( num < 0 )num *= (-1);
	
	int count = 0;
	
	for(int i = 10; num != 0; i *= 10)
	{
		int diff = num % i;
		num -= diff;
		count++;
	}
		
	return count;
}