Go: package main

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

var sc = bufio.NewScanner(os.Stdin)

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

func main() {
	sc.Split(bufio.ScanLines)
	for sc.Scan() {
		s := strings.Split(sc.Text(), " ")
		a, _ := strconv.ParseFloat(s[0], 64)
		b, _ := strconv.ParseFloat(s[1], 64)
		c, _ := strconv.ParseFloat(s[2], 64)
		d, _ := strconv.ParseFloat(s[3], 64)
		e, _ := strconv.ParseFloat(s[4], 64)
		f, _ := strconv.ParseFloat(s[5], 64)
		x := ((b * f) - (c * e)) / ((b * d) - (a * e))
		y := ((a * f) - (c * d)) / ((a * e) - (b * d))
		if x == 0 {
			fmt.Printf("0.000 %.3f\n", y)
		} else if y == 0 {
			fmt.Printf("%.3f 0.000\n", x)
		} else {
			fmt.Printf("%.3f %.3f\n", x, y)
		}
	}
}

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

int main()
{
  double a[10],b[10];
  for(int i=0;i<6;i++)
  {

	  cin>>a[i];
	  if((a[i]>1000)||(a[i]<-1000)){
	    cout << "nomber error" <<endl;
	    return 0;
     }
  }
  for(int i=0;i<6;i++)
  {

	  cin>>b[i];
	  if((b[i]>1000)||(b[i]<-1000)){
	    cout << "nomber error" <<endl;
	    return 0;
     }
  }
  cout<<fixed<<setprecision(3)<<(a[2]*a[4]-a[1]*a[5])/(a[0]*a[4]-a[1]*a[3])<<" ";
  cout<<fixed<<setprecision(3)<<(a[2]*a[3]-a[0]*a[5])/(a[1]*a[3]-a[0]*a[4])<<" ";
  cout<<endl;
  cout<<fixed<<setprecision(3)<<(b[2]*b[4]-b[1]*b[5])/(b[0]*b[4]-b[1]*b[3])<<" ";
  cout<<fixed<<setprecision(3)<<(b[2]*b[3]-b[0]*b[5])/(b[1]*b[3]-b[0]*b[4])<<" ";
  return 0;
}

C++: #include <iostream>
#include <stdio.h>
#define swap(a,b) {a=a+b; b=a-b; a=a-b;}

using namespace std;

void q4() {
	double a, b, c, d, e, f;
	for (; cin >> a >> b >> c >> d >> e >> f;) {
		//cin >> a >> b >> c >> d >> e >> f;
		//scanf_s("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f);

		if (a == 0) {
			swap(a, d);
			swap(b, e);
			swap(c, f);
		}
		b /= a;
		c /= a;
		a = 1;

		e -= b * d;
		f -= c * d;
		d = 0;

		f = f / e;
		e = 1;
		
		c -= f * b;
		b = 0;

		printf("%.3f %.3f\n", c, f);
	}
}

int main() {
	q4();
	return 0;
}

C++: #include <iostream>

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

    while (std::cin >> 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);
        if (x == -0) {
            x = 0;
        }
        if (y == -0) {
            y = 0;
        }
        std::cout << std::fixed << x << " " << y << std::endl;
    }

    return 0;
}

C++: #include <vector>
#include <iostream>
#include <set>
#include <cstdio>
#include <queue>
#include <cstdio>
#include <cstdlib>
#include <cassert>
#include <ctime>
#include <algorithm>
#include <tuple>
#include <algorithm>
#include <limits>
#include <map>

using namespace std;

typedef long long ll;
typedef pair<int, int> P;
typedef tuple<int, int, int> T;

int main() {
    int a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        double det = a*e-b*d;
        double r1 = (e*c-b*f)/det;
        double r2 = (-d*c+a*f)/det;
        printf("%.3f %.3f\n", r1, r2);
    }
    return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <math.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 = 0.0;
        y = 0.0;
        
        x = (c*e-f*a)/(a*e-b*d);
        
        y = (c*d-f*a)/(b*d-a*e);
        
        
        printf("%.3f %.3f\n", x, y);
        
        
	}
    
    
	return 0;
}

C++: #include<stdio.h>

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

  while(scanf("%lf %lf %lf %lf %lf %lf",&a ,&b ,&c ,&d ,&e ,&f) != EOF){

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

C++: #include <iomanip>
#include <utility>
#include <vector>
#include <math.h>
#include <algorithm>
#include <string>
#include <iostream>
using namespace std;

int main()
{
	double a[3], b[3];
	while (cin >> a[0] >> a[1] >> a[2] >> b[0] >> b[1] >> b[2])
	{
		if (a[0] == 0)
		{
			double c = a[2] / a[1];
			double d = (b[2] - b[1] * c) / b[1];
			a[2] = d;
			b[2] = d;
		}
		else
		{
			double c = 1;
			if (b[0] != 0)
			{
				c = a[0] / b[0];
				b[1] = b[1] * c - a[1];
				b[2] = b[2] * c - a[2];
			}
			b[2] /= b[1];
			b[1] = 1;
			a[2] -= b[2] * a[1];
			a[2] /= a[0];
		}
		if (a[2] < 0.0001 && a[2] > -0.0001)
			a[2] = 0.000;
		if (b[2] < 0.0001 && b[2] > -0.0001)
			b[2] = 0.000;

		cout << fixed << setprecision(3) << a[2]  << " " << b[2] << endl;
	}

	return 0;
}

C++: #include<cstdio>
int main(){
    float a[6];
    float x,y;
    while(~scanf("%f",&a[0])){
        for(int i=1;i<6;i++){
            scanf("%f",&a[i]);
        }
        y=(a[2]-(a[5]*(a[0]/a[3])))/(a[1]-(a[4]*(a[0]/a[3])));
        x=(a[2]-a[1]*y)/a[0];
        printf("%.3f %.3f\n",x,y);
    }
}

C++: #include <iostream>
#include <cstdio>
using namespace std;
int main(){

	int 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 = (c*d - a*f)/(b*d - a*e);

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

	return 0;
}

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

int main(void){
	double x1,y1;
	int a=0,b=0,c=0,d=0,e=0,f=0,x2,y2;
    
    while(scanf("%d %d %d %d %d %d\n",&a,&b,&c,&d,&e,&f) != EOF)
	{
	    x2 = (c * e -b * f) / (a * e - b * d)*1000+0.5;
	    y2 = (a * f -d * c) / (a * e - b * d)*1000+0.5;

		x1 = x2/1000;
		y1 = y2/1000;
		printf("%lf %lf\n",x1,y1);
	}
  return 0;
}

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 << 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++: #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const ll MOD = 1e9 + 7/*998244353*/;
const ll INF = 1LL << 60;
ll mod_pow(ll, ll, ll); ll mod_fact(ll, ll); ll mod_inv(ll, ll); ll gcd(ll, ll); ll lcm(ll, ll);
//
int main(){
    ld a, b, c, d, e, f;
    while(cin >> a >> b >> c >> d >> e >> f){
        ld x, y;
        x = (c * e - b * f) / (a * e - b * d);
        y = (c * d - a * f) / (b * d - a * e);
      	if(abs(x) < 1e-10) x = 0;
        if(abs(y) < 1e-10) y = 0;
        cout << fixed << setprecision(3) << x << " " << y << "\n";
    }
}

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

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

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

	cin >> a >> b >> c >> d >> e >> f)

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

	cout << showpoint << setprecision(3);
	cout << setiosflags( ios::fixed );
	cout << ( x == -0.0 ? 0.0 : x ) << " " << ( y == -0.0 ? 0.0 : y ) << endl;
}

C++: #include <math.h>
#include <algorithm>
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
	int a,b,c,d,e,f;
	double x,y;
	while(cin>>a>>b>>c>>d>>e>>f)
	{
		-1000 <= a, b, c, d, e, f <= 1000;
		x= (c*e-b*f)/(a*e-b*d);
		y= (c*d-a*f)/(b*d-a*e);
		
                round(x);
                round(y);
		cout<<setprecision(3);
                cout << setiosflags(ios::fixed);
		cout<<x<<" "<<y<<endl;
	}
	return 0;
}