Go: package main

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

func gcd(num1, num2 int) int {
	if num2 == 0 {
		return num1
	}
	num3 := num1 % num2
	return gcd(num2, num3)
}

func lcm(num1, num2 int) int {
	if num1%num2 != 0 {
		num3 := gcd(num1, num2)
		for i := 1; ; i++ {
			check := num3 * i
			if check%num1 == 0 && check%num2 == 0 {
				return check
			}
		}
	} else {
		return num1
	}
}

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]
		lcm := lcm(a, d)
		mulA := lcm / a
		mulD := lcm / d
		a *= mulA
		b *= mulA
		c *= mulA
		d *= mulD
		e *= mulD
		f *= mulD

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

		bE := b - e
		cF := c - f
		y := cF / bE
		x := (c - (y * b)) / a

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

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

int main(){
  int i = 0;
  int a, b, c, d, e, f;

  while(scanf("%d", &a)!=EOF){
  i++;
  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("%.3f %.3f\n", x, y);
  
  long line = ftell(stdin);
  if(scanf("%d", &a)==EOF) break;
  
  return 0;
}

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 << fixed;
		cout<<x<<" "<<y<<endl;
	}
	return 0;
}

C++: #include<stdio.h>
int main(void){
  float a,b,c,d,e,f,x,y;
  int j=0,i=0;
  float n[2][1000];
  while(scanf("%f %f %f %f %f %f",&a, &b, &e, &c, &d, &f)!=EOF){
    if(a*d-b*c!=0){
      //  printf(" %f %f %f %f %f %f %f\n",a,b,e,c,d,f,((d*e-b*f)/(a*d-b*c)));
      x=((d*e-b*f)/(a*d-b*c));
      y=((a*f-c*e)/(a*d-b*c));
      n[0][i]=x;
      n[1][i]=y;
      //printf(" %.3f %.3f %d\n",x,y);
      //printf(" %.3f %.3f %d\n",n[0][i],n[1][i],i);
     i++;}}
 
  while(j<i){
    printf(" %.3f %.3f %d\n",n[0][j],n[1][j],j);
    j++;  
}



  return 0;
}

C++: #include <cstdio>
#include <iostream>
double sol[10000][2];
int main()
{
    double a, b, e, c, d, f;
    int i = 0;
    while (std::cin >> a >> b >> e >> c >> d >> f)
    {
        double det = a * d - b * c;
 
        double aa = d / det, bb = -b / det, cc = -c / det, dd = a / det;
        sol[i][0] = aa * e + bb * f;
        sol[i][1] = cc * e + dd * f;
 
        i++;
    }
    for (int j = 0; j < i; j++)
        printf("%.3f %.3f\n", sol[j][0], sol[j][1]);
    return 0;
}

C++: #include<algorithm>
#include<functional>
#include<cmath>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<string>
#include<sstream>
#include<iostream>
#include<iomanip>
#include<vector>
#include<list>
#include<stack>
#include<queue>
#include<map>
#include<set>
#include<bitset>

#define all(c) (c).begin(), (c).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define pb(e) push_back(e)
#define mp(a, b) make_pair(a, b)
#define fr first
#define sc second

typedef unsigned long long ull;
typedef long long ll;

const int INF=100000000;
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

using namespace std;

typedef pair<int ,int > P;

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


int main()
{

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

		double x=(c-b*y)/a;
		/*
		if(x==0.0)
			x=0.0;
		if(y==0.0)
			y=0.0;
			*/
		printf("%.3lf %.3lf\n",x,y);

	}
	


	return 0;
}

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 <vector>
#include <cstdio>
#include <math.h>

using namespace std;

int main(void){
	double arr[6];
	vector<double> x,y;

	while (cin >> arr[0] >> arr[1] >> arr[2] >> arr[3] >> arr[4] >> arr[5]){
		double a = arr[0]; double b = arr[1]; double c = arr[2]; double d = arr[3]; double e = arr[4]; double f = arr[5];
		x.push_back((c/a)-(b/a)*(a*f-c*d)/(a*e-b*d));
		y.push_back((a*f-c*d)/(a*e-b*d));
	}
	for (unsigned int i=0; i<x.size(); ++i){
		printf("%.3lf %.3lf\n", x[i], y[i]);
	}
	return 0;
}

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

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

int main(){
	
	double a, b, c, d, e, f, x=0, y=0; // ???????°???°?????°??? %f
	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);
	}
}

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%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){
				ansx[i] += 0.001;
			}
			if (((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 <stdio.h>

#define X 0
#define Y 1
#define C 2
#define SIKI1 0
#define SIKI2 1
#define LEFT  0
#define RIGHT 1

int main(){
	double A[3][3][3];
	int n[6];

	while( scanf("%d %d %d %d %d %d",&n[0],&n[1],&n[2],&n[3],&n[4],&n[5]) != EOF){
		//ÏÌú»
		for(int i=0 ; i<=RIGHT ; i++){
			for(int j=0 ; j<=SIKI2 ; j++){
				for(int k=0 ; k<=C ; k++){
					A[i][j][k] = 0;
				}
			}
		}

		//lÌãü
		A[LEFT][SIKI1][X]  = n[0];
		A[LEFT][SIKI1][Y]  = n[1];
		A[RIGHT][SIKI1][C] = n[2];
		A[LEFT][SIKI2][X]  = n[3];
		A[LEFT][SIKI2][Y]  = n[4];
		A[RIGHT][SIKI2][C] = n[5];

		//®PÌXð¶Ó©çEÓÖÚ·é
		A[ RIGHT ][ SIKI1 ][ X ]  += (-1.0)*(A[ LEFT ][ SIKI1 ][ X ]);
		A[ LEFT  ][ SIKI1 ][ X ]  = 0;

		//®PÌ¼ÓðYÌWÅé		
		A[ RIGHT ][ SIKI1 ][ X ]  /= A[ LEFT ][ SIKI1 ][ Y ];
		A[ RIGHT ][ SIKI1 ][ C ]  /= A[ LEFT ][ SIKI1 ][ Y ];
		A[ LEFT  ][ SIKI1 ][ Y ]  = 1;

		//®QÌYÉãüµÄ®Qð(ax = b)Ì`É·é
		int a = A[ LEFT ][ SIKI2 ][ Y ];
		A[ LEFT  ][ SIKI2 ][ X ]  += a * A[ RIGHT ][ SIKI1 ][ X ];
		A[ LEFT  ][ SIKI2 ][ Y ]   = 0;
		A[ RIGHT ][ SIKI2 ][ C ]  += a * A[ RIGHT ][ SIKI1 ][ C ] * (-1.0);
		//XYÌðªÜé
		double answerX = A[ RIGHT ][ SIKI2 ][ C ] / A[ LEFT ][ SIKI2 ][ X ];
		double answerY = (n[2] + n[0]*answerX*(-1.0))/n[1];
		
		//¬æSÊðlÌÜü·é
		if( (((int)(answerX*10000))%10) >= 5){
			answerX += 0.001;
		}
		if( (((int)(answerY*10000))%10) >= 5){
			answerY += 0.001;
		}
		//ðÌoÍ
		printf("%.3f %.3f\n", answerX , answerY);
	}

	return 0;
}

C++: #include<stdio.h>
#include<math.h>
int main(void){
    double a,b,c,d,e,f,A,x,y,X,Y,Z;

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

    Y=b*d-e*a,Z=c*d-f*a;
    y=Z/Y;

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

   printf("%.3lf %.3lf\n",x,y);
    }
   //printf("\na%lf\nb%lf\nc%lf\nd%lf\ne%lf\nf%lf\n%lf\n%lf",a,b,c,d,e,f,Y,Z);

    return 0;
}