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.Print(x)
		fmt.Print(".000 ")
		fmt.Print(y)
		fmt.Println(".000")
	}
}

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

using namespace std;

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

	while(cin>>a>>b>>c>>d>>e>>f){	
			double x,y;

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

			double diff = 0.5;

			x<0?(diff=-0.5):(diff=0.5);
			x = (int)(x*1000+diff);
			
			y<0?(diff=-0.5):(diff=0.5); 
			y = (int)(y*1000+diff); 
			

			x /= 1000;y/=1000;
			

			printf("%.3f %.3f\n", x, y);	
		}	
		
	return 0;
}

C++: #include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef complex<double> P;
typedef pair<int,int> pii;
#define REP(i,n) for(ll i=0;i<n;++i)
#define REPR(i,n) for(ll i=1;i<n;++i)
#define FOR(i,a,b) for(ll i=a;i<b;++i)

#define DEBUG(x) cout<<#x<<": "<<x<<endl
#define DEBUG_VEC(v) cout<<#v<<":";REP(i,v.size())cout<<" "<<v[i];cout<<endl
#define ALL(a) (a).begin(),(a).end()

#define MOD (ll)(1e9+7)
#define ADD(a,b) a=((a)+(b))%MOD
#define FIX(a) ((a)%MOD+MOD)%MOD

int main(){
  double a,b,c,d,e,f;
  while(~scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f)){
    // ax+by=c
    // dx+ey=f
    double x,y;
    x = (b*f-c*e)/(b*d-a*e);
    y = (f-d*x)/e;
    if(abs(x)<1e-9) x = abs(x);
    x = round(x*1000.0)/1000.0;
    y = round(y*1000.0)/1000.0;
    printf("%.3lf %.3lf\n",x,y);
  }
  return 0;
}

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

using namespace std;
int main(){
    float a,b,c,d,e,f;
    while((cin>>a>>b>>c>>d>>e>>f)){
        float x = (c*e-b*f)/(a*e-b*d);
        float y = (c*d-a*f)/(b*d-a*e);
        x = round(1000*x) / 1000;
        y = round(1000*y) / 1000;
        if(x==0){
            x = 0;
        }
        if(y==0){
            y = 0;
        }
        printf("%.3f %.3f",x,y);
    }
    return 0;
}

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

int main(){

	float a, b, c, d, e, f, x, y;

	while(1){
		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);

		cout << x << " " << y << endl;
	}

	return 0;
}

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

int main() {
    clock_t cTimeStart, cTimeEnd;
    cTimeStart = clock();           // 現在時刻
    float a,b,c,d,e,f ;
    float x,y;
    while(cin>>a>>b>>c>>d>>e>>f){
    	x=(f*b-e*c)/(b*d-e*a);
       	y=(f*a-d*c)/(e*a-b*d);
       	if(x>-0.001&&x<=0)x=0.0;
       	if(y>-0.001&&y<=0)y=0.0;

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

    cTimeEnd = clock();           // 現在時刻
//    cout<< "処理時間:" <<(cTimeEnd - cTimeStart)/1000 << "[ms]" << endl;

	return 0;
}

C++: #include <stdio.h>
#include <math.h>
int main(){
 double a,b,c,d,e,f,y[10000],x[10000];
 int i=0,n;
while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f) != EOF){
  y[i]=((c*d)-(a*f))/((b*d)-(a*e));
  x[i]=((c*e)-(b*f))/((a*e)-(b*d));
  i++;
}
  n=i;
  for(i=0;i < n; i++){
    x[i]=fabs(x[i]);
    y[i]=fabs(y[i]);
  printf("%.3lf %.3lf\n", x[i],y[i]);
  }
  return 0;
}

C++: #include<iostream>
#include<algorithm>
#include<stdio.h>
using namespace std;
int main(){
	int a,b,c,d,e,f;
	int o,p,q,r,s,t;
	float x,y;
	while(scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f)!=EOF){
		o=a;p=b;q=c;r=d;s=e;t=f;
		o*=d;p*=d;q*=d;
		r*=a;s*=a;t*=a;
		//printf("%d %d %d %d %d %d \n",o,p,q,r,s,t);
		p-=s;
		q-=t;
		y=(float)(q/p);
		int g=(int)(e*y);
		g*=-1;
		x=(float)((f+g)/d);
		printf("%.3f %.3f",x,y);
	}
}

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

int main()
{
	//ax + by = c
	//dx + ey = f

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

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

C++: #include <iostream>
#include <vector>
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);
		x = (c - b * y) / a;
		result_y.push_back(y);
		result_x.push_back(x);
		cout << result_x[count] << ' ' << result_y[count] << endl;
		count++;
	}

	return 0;
}

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

int main(){
double a,b,c,d,e,f,a_,b_,c_,d_,e_,f_;
double x,y;
double in;
while (std::cin >>a>>b>>c>>d>>e>>f){
in = (a*e - b*d);
a_ = a/in;
b_ = -1*d/in;
d = -1*b/in;
e_ = e/in;
x = c * a_ + f*b_;
y = c*d_ + f*e_;
std::cout << std::setprecision(3) << x << ' ' << std::setprecision(3) << y << std::endl;
}
    return 0;
}

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

using namespace std;

double EPS = 1e-4;

int gcd(int a, int b) { return b != 0 ? gcd(b, a%b) : a; }

int main() {
	double a, b, c, d, e, f;
	
	while (cin >> a >> b >> c >> d >> e >> f) {
		double x, y;
		
		int div1 = gcd(a, b), div2 = gcd(b, d);
		int div = gcd(div1, div2);
		a /= div; b /= div; c /= div;
		
		div1 = gcd(d, e); div2 = gcd(e, f);
		div = gcd(div1, div2);
		d /= div; e /= div; f /= div;
		
		double s = a*f/d, s_ = a*e/d;
		if (fabs(s) < EPS) s = 0.0;
		if (fabs(s_) < EPS) s_ = 0.0;
		
		y = (c - s)/(b - s_);
		if (fabs(y) < EPS) y = 0.0;
		
		x = (c - b*y)/a;
		if (fabs(x) < EPS) x = 0.0;
		
		printf("%.3lf %.3lf\n", x, y);
	}
	
	return 0;
}

C++: #include <iostream>
#include <iomanip>
#include <sstream>
#include <stdio.h>
#include <vector>
#include <stack>
#include <queue>
#include <algorithm>
#include <math.h>
#include <utility>
#include <string>
#include <ctype.h>
#include <cstring>
#include <cstdio>
#include <sstream>
using namespace std;

#define FOR(i,k,n) for(int i = (k); i < (n); i++)
#define REP(i,n) FOR(i,0,n)
#define INF 114514810
#define ll long long

double a, b, c, d, e, f, x, y;
int main()
{
	while (cin >> a >> b >> c >> d >> e >> f)
	{
		b *= d; c *= d;
		e *= a; f *= a;
		a *= d; d = a;
		y = (c - f) / (b - e);
		x = (c - b*y) / a; 
		if (x == 0) x = 0;
		if (y == 0) y = 0;
		printf("%.3f %.3f\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;
	double g, h, i;

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

		g = a * d;
		h = g / a;
		i = g / d;

		y = (h * c - i * f) / (h * b - i * e);

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

		if(x == 0){
			x = 0;
		}
		else if(y == 0){
			y = 0;
		}

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

	}

	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", floor(x * 1000.0) / 1000.0, floor(y * 1000.0) / 1000.0);
  }
  return 0;
}