Go: package main

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

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	for scanner.Scan() {
		strNums := strings.Fields(scanner.Text())
		nums := []int{}
		for _, strNum := range strNums {
			num, _ := strconv.Atoi(strNum)
			nums = append(nums, num)
		}
		a := nums[0]
		b := nums[1]
		c := nums[2]
		d := nums[3]
		e := nums[4]
		f := nums[5]
		var mulA, mulD int
		if a < 0 {
			mulA = a * -1
		} else {
			mulA = a
		}
		if d < 0 {
			mulD = d * -1
		} else {
			mulD = d
		}
		a *= mulD
		b *= mulD
		c *= mulD
		d *= mulA
		e *= mulA
		f *= mulA

		if d < 0 {
			d *= -1
			e *= -1
			f *= -1
		}

		bE := b - e
		cF := c - f
		if bE == 0 {
			bE = 1
		}
		y := cF / bE
		x := (c - (y * b)) / a

		fmt.Printf("%d.000 ", x)
		fmt.Printf("%d.000\n", y)
	}
}

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

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

int main() {
	double a, b, c, d, e, f, xx, yy;
	while (cin >> a >> b >> c >> d >> e >> f) {
		double y = (a * f - c * d) / (a * e - b * d);
	    double y = (c*d - a * f) / (b*d - a * e);
		cout << fixed << setprecision(3) << x << " " << y << endl;
	}

	return 0;
}

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

int main(void){
  double a,b,c,d,e,f;
  while(cin>>a>>b>>c>>d>>e>>f){
  double p = a * e - b * d;
  double x = (e * c - b * c) / p;
  double y = (a * f - d * f) / p;
  printf("%.10f %.10f\n",x,y);
  }

}

C++:  #include<iostream>
 #include<stdio.h>
 #include<string>
 #include<math.h>
 #include<iomanip>
 #include<algorithm>
 #include<string.h>
 #include<cctype>
 #include<map>
 #include<set>
 #include<vector>
 #include<sstream>
 
 using namespace std;

 int main()
 {
   int a,b,c,d,e,f;
   while(cin>>a>>b>>c>>d>>e>>f)
   {
     double y=1.0*(c*d-f*a)/(b*d-a*e);
     double x=1.0*(c*e-f*b)/(a*e-d*b);
     if(x==0.0) x=0.0;
     if(y==0.0) y=0.0;
     printf("%.3lf %.3lf\n",x,y);            
   }
   //while(1);      
   return 0;    
 }

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

using namespace std;

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


double x(double, double, double, double, double, double) {

	return (c*e - b*f) / (a*e - b*d);
}

double y(double, double, double, double, double, double) {

	return (a*f - c*d) / (a*e - b*d);
}

double round(double dat, int keta ){

	int fct;
	fct =  int pow(10, keta - 1);
	dat *= fct;
	dat += (dat < 0) ? -0.5 : 0.5;
	dat = (int)(dat);
	dat /= fct;
	return dat;
}

int main()
{
	double x1, x2, y1, y2;
	cin >> a >> b >> c >> d >> e >> f;

	x1 = x(a, b, c, d, e, f);
	y1 = y(a, b, c, d, e, f);

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

	x2 = x(a, b, c, d, e, f);
	y2 = y(a, b, c, d, e, f);

	cout << fixed << setprecision(3) << round(x1,3) << " " << round(y1,3) << endl;
	cout << fixed << setprecision(3) << round(x2,3) << " " << round(y2,3) << endl;

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

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

int main(){
  int a, b, c, d, e, f;
  scanf("%d",&a);
  scanf("%d",&b);
  scanf("%d",&c);
  scanf("%d",&d);
  scanf("%d",&e);
  scanf("%d",&f);
  
  double x, y;
  x = (double)(c*e-b*f) / (double)(a*e-b*d);
  y = (double)(a*f-c*d) / (double)(a*e-b*d);
  x = (double)round(x*10000.0) / 10000.0;
  y = (double)round(y*10000.0) / 10000.0;
  printf("%f.3 %f.3\n", x, y);
  
  return 0;
}

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

C++: #include <bits/stdc++.h>
using namespace std;

#define INF 1.1e9
#define LINF 1.1e18
#define FOR(i,a,b) for (int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define BIT(x,n) bitset<n>(x)
#define PI 3.14159265358979323846

typedef long long ll;
typedef pair<int,ll> P;
typedef pair<ll,P> PP;

//-----------------------------------------------------------------------------

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

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

	return 0;
}

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

int main(void)
{
	double a,b,c,d,e,f;
	double ans[2];

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

	ans[1] = (c*d-a*f)/(b*d-a*e);
	ans[0] = (c*d-b*d*ans[1])/(a*d);

	printf("%.3lf %.3lf\n", ans[0],ans[1]);

	return 0;
}

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

int main()
{
	double a, b, c, d, e, f, x, y;			// ax + by = c 
											// dx + ey = f
	while (cin >> a >> b >> c >> d >> e >> f)
	{
		x = (double)((c*e - b*f) / (a*e - b*d));
		y = (double)((a*f - c*d) / (a*e - b*d));
		printf("%1.3f %1.3f\n", x, y);
	}
}

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

int main(void){
	double a,b,c,d,e,f;
	//int X[2][2]={ {c,b}, {f,e} };
	//int Y[2][2]={ {a,c}, {d,f} };
	double x,y;
	double A,X,Y;
	while(cin>>a>>b>>c>>d>>e>>f){
		A=a*e-b*d;
		X=c*e-b*f;
		Y=a*f-c*d;
		x=(1/A)*X;
		y=(1/A)*Y;
		if(x==-0)
			x=0;
		if(y==-0)
			y=0;

		cout << fixed << setprecision(3) << x << ' ' << y << endl;
	}
	
	return 0;
}

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

int main(){
	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){
		y = (c/a-f/d)/(b/a-e/d);
		x = c/a-b/a*y;
		printf("%6.3lf %6.3lf\n",x,y);
	}
	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 <cstdio>

using namespace std;

int GCD(int x, int y)
{
    if (y == 0) return x;
    
    return GCD(y, x % y);
}

int LCM(int x, int y)
{
    return x / GCD(x, y) * y;
}

int main() {
	int a, b, c, d, e, f;
	int _a, _b, _c, _d, _e, _f;
	double x, y;
	int _x, _y, _z;
	int multiTop, multiBottom;
	int common;
	
	while (scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != EOF) {
	    common = LCM(a, d);
	    multiTop = common / a;
	    multiBottom = common / d;
	    
	    _a = common;
	    _b = b * multiTop;
	    _c = c * multiTop;
	    
	    _d = common;
	    _e = e * -multiBottom;
	    _f = f * -multiBottom;
	    
	    _y = _b + _e;
	    _z = _c + _f;
	    
	    y = (double)_z / (double)_y;
	    
	    _c = c - (b * y);
	    
	    x = (double)_c / (double)a;
	    
	    printf("%.3f %.3f\n", x, y);
	}
	
	return 0;
}