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

C++: #include <stdio.h>

//#define DEBUGNOW
/*
#ifdef DEBUGNOW
#define debug
#else
*/
#define debug 1 ? (void)0 :
//#endif

double sishagonyu(double num)	{
	
	//int num2;
	
	if (num == 0) return num;
	
	if (num > 0) { num += 0.0005; }
	else { num -= 0.0005; }
	
	num = (double)(int)(num * 1000) / 1000;
	
	//	num *= 1000;
	//	num2 = (int)num;
	//	num = num2;
	//	num /= 1000;
	
	return num;
}

int main() {
	
	//printf("%.3lf", sishagonyu((double)-0.0015));
	
	
	double a, b, c, d, e, f;
	double x, y;
	
	double n, m, h, i;
	
	while(scanf("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f) != EOF){
		
		//if (scanf("%lf %lf %lf %lf %lf %f", &a, &b, &c, &d, &e, &f) == EOF) break;
		
		debug printf("input:\n%f %f %f\n%f %f %f\n", a, b, c, d, e, f);	//input
		
		if (a == 0) { y = c / b; }
		if (b == 0) { x = c / a; }
		if (d == 0) { y = f / e; }
		if (e == 0) { x = f / d; }
		
		n = a / d;
		
		//j = d * n;
		h = e * n;
		i = f * n;
		
		debug printf("%f %f %f\t%f %f\t%f\n", a, b, c, h, i, n);
		
		m = b - h;
		y = c - i;
		debug printf("%f %f\n", m, y);
		
		if(y <= 0.0004 && y >= -0.0005) { 
			
			debug printf("y = 0\n");
			y = 0; 
			
		} else {
			
			y /= m;
			debug printf("%f\n", y);
			
			i = c - (b * y);
			x = i / a;
			
			debug printf("x = %f, y = %f\n", x, y);
			
			x = sishagonyu(x);
			y = sishagonyu(y);
			
		}
		//printf("%f %f\n", x, y);
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}
//2.2 3.3 22.24706 3.2 8.7 50.12932
//3.2777 4.5564

//1 2 3 4 5 6
//-1.000 2.000

//2 -1 -2 -1 -1 -5
//1.000 4.000

//2 -1 -3 1 -1 -3
//0.000 3.000

// 2 -1 -3 -9 9 27
// 0.000 3.000

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

double x,y;
int a,b,c,d,e,f;
int sisya = 1000;


void setX() {
    double ae, bd, ce, bf;
    
    ae = a * e;
    bd = b * d;
    ce = c * e;
    bf = b * f;
    
    x = (double)((ce - bf) / (ae - bd));
    x *= sisya;
    if(x >= 0) x += 0.5;
    else x -= 0.5;
    x = int(x);
    x /= sisya;
}

void setY() {
    double ae, af, cd, bd;
    
    bd = b * d;
    ae = a * e;
    cd = c * d;
    af = a * f;
    
    y = (double)((cd - af) / (bd - ae));
    y *= sisya;
    if(y >= 0) y += 0.5;
    else y -= 0.5;
    y = int(y);
    y /= sisya;
    
}

int main(void) {    
    while(cin >> a >> b >> c >> d >> e >> f) {
        setX();
        setY();
        cout << setprecision(3);
        cout << setiosflags(ios::fixed);
        cout << x << " " << y << endl;
    }
    return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
	float a,b,c,d,e,f,x,y;
	while(cin>>a>>b>>c>>d>>e>>f){
		y = (d*c - a*f)/(d*b - a*e);
		x = (f - e*y)/d;
	
	printf("%0.3f %0.3f",x,y);
	}
}

C++: #include <iostream>
#include <stdio.h>
#include <cmath>
using namespace std;
int main(){
    double a,b,c,d,e,f;
    while(cin >> a >>b >> c >> d >> e >> f){
    double det,x,y;
    det = a*e-b*d;
    x = (e*c-b*f)/det;
    y = (-c*d+a*f)/det;
    if (x==0)
        x = fabs(x);
    if (y==0)
        y = fabs(y);
    printf("%.3f %.3f\n",x,y);}
}

C++: #include<iostream>
#include<stdio.h>
#include<string.h>
#include<math.h>
using namespace std;

#define MAX 256

int main(void){

	float a, b, c, d, e, f;
	float ansx[MAX], ansy[MAX];

	int i = 0;

	while (scanf("%f%f%f%f%f%f", &a,&b,&c,&d,&e,&f) != EOF){
		if (a*e != b*d){
			ansx[i] = (c*e - b*f) / (a*e - b*d);
			ansy[i] = (c*d - a*f) / (b*d - a*e);
			if (((int)(ansx[i] * 10000) % 10) > 4 || ((int)(ansx[i] * 10000) % 10) < -4){
				ansx[i] += 0.001;
			}
			if (((int)(ansy[i] * 10000) % 10) > 4 || ((int)(ansy[i] * 10000) % 10) < -4){
				ansy[i] += 0.001;
			}
		}
		i++;
	}

	for (int j = 0; j < i; j++){
		printf("%.3f %.3f\n", ansx[j], ansy[j]);
	}
	
	return 0;
}

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

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

using namespace std;

int main (void) {
    int a, b, c, d, e, f;
    double x, y;
    while (1) {
        cin >> a;
        cin >> b;
        cin >> c;
        cin >> d;
        cin >> e;
        cin >> f;
        if (cin.eof()) break;
        x = (double)(c * e - b * f) / (double)(a * e - b * d);
        y = (double)(c * d - a * f) / (double)(b * d - a * e);
        cout << fixed << setprecision(3) << x << ' ' << y << endl;
    }
    return 0;
}

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

using namespace std;

double solutionY();
double solutionX(double);
double a1,b1,c1,d1,e1,f1;

int main(){
  double x,y,xO,yO;
  
  cin >> a1 >> b1 >> c1 >> d1 >> e1 >> f1;
  
  y = solutionY();
  x = solutionX(y);
 
  cout << fixed << setprecision(3) << x << " " << y << endl; 
}

double solutionY(){
  double b,c,e,f;
  b = b1/a1;
  c = c1/a1;

  e = e1/d1;
  f = f1/d1;
  
  return (c - f)/(b - e);
}

double solutionX(double y){
  double b,c;
  b = b1/a1;
  c = c1/a1;
  
  return (c - b*y);
}

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

using namespace std;

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

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

C++: #include <cmath>
#include <cstdlib>
#include <cstdio>

#include <iostream>
#include <vector>
#include <algorithm>

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

  for(;;) {
    std::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);

    x = (double)(long)(x*1000);
    y = (double)(long)(y*1000);

    x /= 1000;
    y /= 1000;    

    printf("%.03lf %.03lf\n", x, y); 

    if( std::cin.eof() ) {
      break;
    }
  }

  return 0;
}

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

int main(void){
    int a,b,c,d,e,f;
    double ansX,ansY;
    while(std::cin >> a >> b >> c >> d >> e >> f){
        ansX = (c*e - b*f) / (a*e - b*d);
        ansX *= 1000;
        if(ansX > 0) 
            ansX += 0.5;
        else 
            ansX -= 0.5;
        ansX = int(ansX);
        ansX /= 1000;
        
        ansY = (a*f - c*d) / (a*e - b*d);
        ansY *= 1000;
        if(ansY > 0) 
            ansY += 0.5;
        else
            ansY -= 0.5;
        ansY = int(ansY);
        ansY /= 1000;
        
        std::cout <<fixed << setprecision(3) << ansX << " " << fixed << setprecision(3)<<ansY << std::endl;
    }
    
    return 0;
}

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

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

    return 0;
}

C++: #include <stdio.h>

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