Go: package main

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

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextFloat64() (float64, error) {
	return strconv.ParseFloat(nextString(), 64)
}

func mathRound(f float64) float64 {
	return math.Floor(f + .5)
}

func round(x float64) float64 {
	if math.Abs(x) < 0.001 {
		return 0
	}
	return mathRound(x*1000) / 1000
}

func main() {
	scanner.Split(bufio.ScanWords)
	for {
		a, err := nextFloat64()
		if err != nil {
			break
		}
		b, _ := nextFloat64()
		c, _ := nextFloat64()
		d, _ := nextFloat64()
		e, _ := nextFloat64()
		f, _ := nextFloat64()

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

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

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;
}

C++: #include<iostream>

using namespace std;

int main()
{
	int a, b, c, d, e, f;
	while(cin >> a >> b >> c >> d >> e >> f){
		double detA;
		double ansx, ansy;
		
		detA = (a*e)-(b*d);
		
		ansx = ((c*e)-(b*f))/detA;
		ansy = ((a*f)-(c*d))/detA;
		
		if(ansx == 0){
			ansx = 0;
		}
		if(ansy == 0){
			ansy = 0;
		}
		
		printf("%.4lf %.4lf\n",ansx,ansy);
	}
}

C++: #include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int main(){
	double x,y;
	double a,b,c,d,e,f;
	while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f)!=EOF){
		x=((e*c-b*f) / (a*e-b*d));
		y=((-(d*c)+a*f) / (a*e-b*d));
		printf("%.3lf %.3lf\n",x,y);
	}
	return 0;
}

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

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

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

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

int main(){
	int i = 0;
	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 - b*d);
		y = (c - a*x) / b;
		cout << fixed << setprecision(3) << x + 0.0001 << " " << setprecision(3) << y + 0.0001 << '\n';
	}

	return 0;
}

C++: #include<stdio.h>

int main(void)
{
	int a,b,c,d,e,f;
	scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f);
	double y = ((c*d-a*f)/(b*d-a*e));
	double x = ((c-b*y)/a);
	
	printf("%0.3f %0.3f", (double)x,(double)y);
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long LL;
#define REP(i,N) for(int i = 0; i < (int)N; i++)

double det(double a1,double a2,double a3,double a4){
	return a1*a4-a2*a3;
}

int main(){
	double a,b,c,d,e,f;
	while(cin >> a >> b >> c >> d >> e >> f){
		double g,h,i;
		g = det(a,b,d,e);
		h = det(c,b,f,e);
		i = det(a,c,d,f);
		double j,k;
		j = h ==0 ?0:h/g;
		k = i ==0 ?0:i/g;
		j = round(j*pow(10,4))/pow(10,4);
		k = round(k*pow(10,4))/pow(10,4);
		printf("%.3f %.3f\n",j,k);
	}
	return 0;
}

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

int main()
{
	int a,b,c,d,e,f;
	double def;
	double x,y;
	while(scanf("%d %d %d %d %d %d",&a, &b, &c, &d, &e, &f) != EOF){
		if((a * e - b * d) != 0){
			def = 1 / (double)(a * e - b * d);
		}else{
			printf("NA\n");
			continue;
		}
		x = def * (double)(e * c - b * f);
		y = def * (double)(a * f - d * c);
		if(abs(x) < 0.0005){
			x = 0.000;
		}
		if(abs(y) < 0.0005){
			y = 0.000;
		}
		printf("%.3lf %.3lf\n",x,y);
	}
	return 0;
}

C++: #include<stdio.h>
#define rep(i,m,n) for(i = m;i < n;i++)
int main(){
	double a[6];
	int i,kcor = 0;
	double kx[1000] = {0},ky[1000] = {0};
	while(scanf("%d",a)!=-1){
		rep(i,1,6)
			scanf("%d",a+i);
		int det;
		det = a[0]*a[4]-a[1]*a[3];
		kx[kcor] = (a[4]*a[2]-a[1]*a[5])/det;
		ky[kcor] = (-a[3]*a[2]+a[0]*a[5])/det;
		kcor++;
	}
	rep(i,0,kcor){
		printf("%.3lf %.3lf\n",kx[i],ky[i]);
		//printf("%lf %lf\n",kx[i],ky[i]);
	}
	return 0;
}

C++: #include <iostream>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include <numeric>
#include <cmath>
using namespace std;
typedef vector<int> VI;
#define REP( i, m, n ) for ( int i = (int)( m ); i < (int)( n ); ++i )

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    vector<pair<double, double>> answers;

    double a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        pair<double, double> ans;
        ans.first = (e * c - b * f) / (a * e - b * d);
        ans.second = (a * f - d * c) / (a * e - b * d);
        answers.push_back(ans);
    }

    for (auto ans : answers) {
        cout.setf(ios::fixed);
        cout.precision(3);
        cout << ans.first << " " << ans.second << endl;
    }
    
    return 0;
}

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 = (c*e-b*f) / (a*e0d*b);
    y = (c-a*x) / c;
    cout << fixed << setprecision(3) << x << " " << y << endl;
  }
  return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <math.h>
using namespace std;
int main(){
    double a , b , c , d , e , f;
    while(cin >> a >> b >> c >> d >> e >> f){
    double t = a;
    a = a*d;
    b = b*d;
    c = c*d;
    d = d*t;
    e = e*t;
    f = f*t;
    double g = b-e;
    double h = c-f;
    double y = h/g;
    double x = (c- b*y) / a ;
    x = x * 1000;
    x = round(x);
    x = x/1000;
    y = y*1000;
    y = round(y);
    y = y/1000;
    printf("%.3lf %.3lf\n" , x  , y );
}
}

C++: #include <algorithm>
#include <cstdio>
using namespace std;
static const double EPS = 1e-9;
int main(){
	double a,b,c,d,e,f;
	while(~scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&e,&f)){
		double x = (b*f-e*c)/(b*d-e*a);
		double y = (c-a*x)/b;
		printf("%.3lf %.3lf\n",x+EPS,y+EPS);
	}
}

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

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

C++: #include<iostream>
#include<iomanip>
using namespace std;
int main()
{
	int a,b,c,d,e,f;
	double x,y;
	while(cin>>a)
	{
		cin>>b>>c>>d>>e>>f;
		y = (double)((c*d-a*f)/(b*d-a*e));
		x = (double)((c*e-b*f)/(a*e-b*d));
		cout<<setprecision(3)<<setiosflags(ios::fixed|ios::showpoint)<<x<<' '<<y<<endl;
	}
	return 0;
}