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++: /**********************************************************
Status:
Problem:
Author:     Md. Shahidul Islam,
            Department of Computer Sciemce and Engineering,
            Begum Rokeya University, Rangpur, Bangladesh
Created on:
***********************************************************/

#include <bits/stdc++.h>
using namespace std;
#define pi acos(-1)
#define vi vector<int>
#define ll long long
#define eps 1e-6
int main()
{
    //freopen("d.txt", "r", stdin);
    int a,  b, c, d, e, f;
    double x, y;
    while(scanf("%d %d %d", &a, &b, &c)!=EOF)
    {
        scanf("%d %d %d", &d, &e, &f);
        
        y=(double)((c*d-a*f)/(b*d-a*e));
        x=(double)((c-b*y)/a);
        printf("%.3lf %.3lf\n", x, y);
    }
    return 0;
}
/**********************************************************
About this problem:

************************************************************/

C++: #include<bits/stdc++.h>
using namespace std;
 main(){
  int a,b,c,d,e,f,r,lcm;
  int n,m;
  int x,y,num,sum;

  while(cin>>a>>b>>c>>d>>e>>f){

    if(a>d){
      m=a;
      n=d;
      if(a<0){
	m*=-1;
      }
      if(d<0){
	n*=-1;
      }
    }
    else{
      m=d;
      n=a;
      if(a<0){
	n*=-1;
      }
      if(d<0){
	m*=-1;
      }
    }

    r=m%n;
    while( r != 0 ){
      m=n;
      n=r;
      r=m%n;
    }
    lcm=a*d/n;

    num=lcm/a;
    sum=lcm/d;

    a*=num;
    b*=num;
    c*=num;

    d*=sum;
    e*=sum;
    f*=sum;

    if( a-d == 0 ){
      y=(c-f)/(b-e);
    }
    else if( a+b == 0 ){
      y=(c+f)/(b+e);
    }

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

    printf("%.3f %.3f\n",(double)x,(double)y);

  }
  return(0);
}

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

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

	while (cin >> a >> b >> c >> d >> e >> f){

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

		x *= 10000;
		x = x + 0.5 - (x < 0);
		x = (int)x;
		x /= 10000;

		y *= 10000;
		y = y + 0.5 - (y < 0);
		y = (int)y;
		y /= 10000;


		cout << setprecision(4) << showpoint << x << " " << y << endl;
	}

	return 0;
}

C++: #include <iostream>
#include <cstdio>
using namespace std;
int main(){
	float a,b,c,d,e,f;
	float g,h,i,j,k,l,n,m,o,p,q,r;
	while(scanf("%f %f %f %f %f %f",&a,&b,&c,&d,&e,&f)!=EOF){
		g=a/d;
		a*=g*-1;
		b*=g*-1;
		c*=g*-1;
		h=b+e;
		i=c+f;
		j=i/h;
		k=e*j;
		l=f-k;
		n=l/d;
		cout<<n<<" "<<j<<endl;
	}
	return 0;
}

C++: #include<stdio.h>

int main(){
  int a, b, c, d, e, f;
  while(scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != EOF){
    double ans1 = (double)(e*c-b*f)/(double)(a*e-b*d);
    double ans2 = (double)(-d*c+a*f)/(double)(a*e-b*d);
    if (ans1 == 0) ans1 = 0;
    if (ans2 == 0) ans2 = 0;
    printf("%.3lf %.3lf\n", ans1, ans2);
  }
  return 0;
}

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

/*
ax + by = c
dx + ey = f

x = (c-by)/a
d(c-by)/a + ey = f
dc/a - dby/a + ey = f
ey - dby/a = f - dc/a
y(e-db/a) = f - dc/a
y = (f-dc/a)/(e-db/a)

aex + bey = ce
bdx + bey = bf
aex - bdx = ce - bf
x(ae - bd) = ce - bf
x = (ce - bf)/(ae - bd)
by = c - ax
y = (c - ax)/b
*/
int main()
{
    while(true){
        double a, b, c, d, e, f;
        std::cin >> a >> b >> c >> d >> e >> f;
        if(std::cin.eof()) break;
        // double y = (f-d*c/a)/(e-d*b/a);
        // double x = (c-b*y)/a;
        double x = (c*e - b*f) / (a*e - b*d);
        double y = (c - a*x) / b;
        std::cout << std::fixed << std::setprecision(3);
        std::cout << x << " " << y << std::endl;
    }
    return 0;
}

C++: #include<stdio.h>
#define rep(i,m,n) for(i = m;i < n;i++)
int main(){
	int a[6],i;
	int 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]);
	return 0;
}

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

using namespace std;

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

C++: #define _CRT_SECURE_NO_WARNINGS
#include<cstdio>

int main(){
	double a, b, c, d, e, f;
	scanf("%lf%lf%lf%lf%lf%lf", &a, &b, &c, &d, &e, &f);
	printf("%.3f %.3f", ((c - b * (c * d - a * f) / (b * d - a * e)) / a, (c * d - a * f) / (b * d - a * e)));
	return 0;
}

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

int main()
{
	double a,b,c,d,e,f;
	double x,y;
	int count = 0;
	vector<double> result_x,result_y;

	while(cin >> a >> b >> c >> d >> e >> f) {
		y = (a * f - c * d) / (a * e - b * d);
		if(a==0)
			x = (c - b * y) / a;
		else
			x = (f - e*y) / d;
		result_y.push_back(y);
		result_x.push_back(x);
		printf("%.3f %.3f\n", x,y);
		count++;
	}

	return 0;
}

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

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

C++: #include<stdio.h>

int main(){
	double a,b,c,d,e,f,x,y,x2,y2;
	double aa=1000,bb=1000;
	int status;
	while(1){
		status=scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f);
		if (status==EOF){
			break;
		}
		x=(f/e-c/b)/(d/e-a/b);
		y=c/b-a*x/b;
		x2=(b*f-c*e)/(b*d-a*e);
		y2=(c-a*x2)/b;
		
		if (b==0){
			y2=(f-d*x2)/b;
		}
		
		
		
		if (x2<0.0005 && x2>-0.0005){
			x2=0;
		}
		if (y2<0.0005 && y2>-0.0005){
			y2=0;
		}
	//	printf("%.3f %.3f\n",x,y);
	//	printf("%f %f\n",x,y);
		printf("%.3f %.3f\n",x2,y2);
	//	printf("%f %f\n\n\n",x2,y2);
	}
	
	return 0;
}

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

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

C++: #include<iostream>
#include<iomanip>
#include<cstdio>
using namespace std;
int main(){
  double a,b,c,d,e,f;
  double x=0.0,y=0.0;
  while(cin>>a>>b>>e>>c>>d>>f){
    x=(d*e-b*f)/(a*d-b*c);
    y=(a*f-c*e)/(a*d-b*c);
    printf("%.3f %.3f\n",x,y);
  }
  return 0;
}

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

int main() {
    string line;
    while (getline(cin, line)) {
        int a, b, c, d, e, f;
        stringstream ss(line);
        ss >> a >> b >> c >> d >> e >> f;

        double x = 0.0;
        if (c*e != b*f)
            x = static_cast<double>(c*e - b*f) / (a*e - b*d);
        double y = 0.0;
        if (b != 0) {
            y = static_cast<double>(c - a*x) / b;
        } else {
            y = static_cast<double>(f - d*x) / e;
        }
        cout.setf(ios_base::fixed, ios_base::floatfield);
        cout << std::setprecision(3) << x << " " << y << endl;
    }
}