Go: package main

import "fmt"

func main() {

	for {
		var a, b, c, d, e, f float64
		var x, y float64
		i, _ := fmt.Scanf("%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f)
		if i != 6 {
			return
		}

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

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

C++: #include<stdio.h>
#define N 1000000
struct{double a,b,c,d,e,f;}data[N];

int main(){
    int i,L;
    double a,b,c,d,e,f;
    double x,y;
    for(i=0; i<N&&scanf("%d %d %d %d %d %d",&data[i].a,&data[i].b,&data[i].c,&data[i].d,&data[i].e,&data[i].f)!=EOF; i++);
    L=i;
    for(i=0;i<L;i++){
        a=data[i].a; b=data[i].b; c=data[i].c; d=data[i].d; e=data[i].e; f=data[i].f;
        x=(1/(a*e-b*d))*(e*c-b*f);
        y=(1/(a*e-b*d))*(a*f-d*c);
        printf("%4.3f %4.3f\n",x,y);
    }
    return 0;
}

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

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

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef pair<ll, int> li;
typedef pair<int, ll> il;
typedef vector<ii> vii;
typedef vector<il> vil;
typedef vector<li> vli;

#define F            first
#define S            second
#define pb(x)        push_back(x)
#define mp(a,b)      make_pair(a,b)
#define mt(a,b,c)    make_tuple(a,b,c)
#define sz           size()
#define all(A)       A.begin(), A.end()
#define mem(a, b)    memset(a, b, sizeof(a))   // all elements of A are b=0 or b=-1 else don't work
#define f0(i,b)      for(ll i=0;i<(b);i++)
#define f1(i,b)      for(ll i=1;i<=(b);i++)
#define f2(i,a,b)    for(ll i=(a);i<=(b);i++)
#define f3(i,b,a)    for(ll i=(b);i>=(a);i--)
#define rep(i,a,b,c) for(ll i=(a);i!=(b);i+=(c))

#define mod          10000007
#define PI           acos(-1.0)
#define MAX3(a,b,c)  max(a,max(b,c))

#define whilee(i,t)  while(i!=t)
#define  sl(a)       scanf("%lld",&a)
#define  pl(a)       printf("%lld\n",a)

//x = 1e18 means 10^18
//for(auto it =A.begin(); it!=A.end(); it++)
//sort(A.begin(),A.end()); //sort(A, +n, greater<int>());
//binary_search(A.begin(),A.end(),x);
//reverse(A.begin(), A.end());
//cout << *max_element(A.begin(), A.end());
//cout << *min_element(A.begin(), A.end());
//count(A.begin(), A.end(), X); //counts the occurrences of X
//distance(A.begin(),A.end());  //distance between first to last element
//accumulate(A.begin(), A.end(), 0); //add
//next_permutation(A.begin(), A.end());
//prev_permutation(A.begin(), A.end());
//swap(S[0], T[0]);

//scanf("%lld",&x);
//printf("%lld\n",x);
//printf("%I64d\n", a);
//while (scanf("%lld %lld", &a, &b) == 2)
//printf("Case %lld: %lld\n", t++, a);

//vector <ll> A;
//deque <ll> A;
//queue <ll> A;
//stack <ll> A;
//list <int> A;
//set <ll> A;
//map <ll,ll> A;
//pair <ll,ll> A ;
//tuple <ll, ll, ll> A;
//vector <pair <ll,ll>> A ;
//bitset<32> bset1;
//bool ok = true;
//char ch;
//string S, T, U;
double i=0, j=0, k=0, a, b, c, d, e, f, g, h, l, m, n, o, p, q, r, s, t=1, u, v, w, z, maxx=INT_MIN, minn=INT_MAX, ans=0, sum=0, cnt=0;

int main()
{

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

    return 0;
}

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

int main(){
	int i = 0;
	double a, b, c, d, e, f;
	double x[2], y[2];
	while (i<=1){
		cin >> a >> b >> c >> d >> e >> f;
		x[i] = (c*e - f*b) / (a*e - b*d);
		y[i] = (c - a*x[i]);
		i++;
	}
	for (int j = 0; j < 2; j++){
		cout << fixed << setprecision(3) << x[j] << " " << setprecision(3) << y[j] << '\n';
	}

	return 0;
}

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

using namespace std;
int main() {
    float a,b,c,d,e,f,x,y;
    while(cin >> a){
        cin >> b;
        cin >> c;
        cin >> d;
        cin >> e;
        cin >> f;

        x = (-f+e*c/b)/(-d+a*e/b);
        y = (c-a*x)/b;
        x *= 10000.0f;
        y *= 10000.0f;
        x += 0.5f;
        y += 0.5f;
        x = (int)x;
        y = (int)y;
        x /= 10000.0f;
        y /= 10000.0f;
        printf("%.3f %.3f\n",x,y);

    }
    return 0;

}

C++: #include <iostream>
#include <iomanip>
#include <math.h>

int main() {
  float a,b,c,d,e,f;
  float x,y;
  while(std::cin >> a >> b >> c >> d >> e >> f) {

    if(a >= d && fmodf(a, d) == 0) {
      y = (c - (f * (a / d))) / (b - (e * (a / d)));
      x = (c - (b * y)) / a;
    }
    else if(a < d && fmodf(d, a) == 0) {
      y = (f - (c * (d / a))) / (e - (b * (d / a)));
      x = (c - (b * y)) / a;
    }
    else if(b >= e && fmodf(b, e) == 0) {
      x = (c - (f * (b / e))) / (a - (d * (b / e)));
      y = (c - (a * x)) / b;
    }
    else if(b < e && fmodf(e, b) == 0) {
      x = (f - (c * (e / b))) / (d - (a * (e / b)));
      y = (c - (a * x)) / b;
    }
    else {}
    if(x == 0) {x = 0.000;}
    if(y == 0) {y = 0.000;}
    std::cout << std::fixed << std::setprecision(3) << x << " " << y << std::endl;
  }

  return 0;
}

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

using namespace std;

/*
aX+bY=c
dX+eY=f
*/

void solve(int a, int b, int c, int d, int e, int f) {
	double x = (f - (double)e*c/b) / (d - (double)e*a/b);
	double y = (c - a*x) / b;
	printf("%4.3f %4.3f\n", x, y);
}

int main() {
	int a, b, c, d, e, f;
	while (cin >> a >> b >> c >> d >> e >> f) {
		solve(a,b,c,d,e,f);
	}
	return 0;
}

C++: #include <stdio.h>
int main(){
	float a = 0,b = 0,c = 0,d = 0,e = 0,f = 0;
	float x = 0,y = 0;

	while(scanf("%f %f %f %f %f %f",&a,&b,&c,&d,&e,&f) != EOF){
		b *= d / a;
		c *= d / a;
		a *= d / a;
		y = (c - f) / (b - e);
		x = (c - b * y) / a;
		printf("%f %f\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);

	if(ans[1] < 0 && ans[1] > -0.0005)
		ans[1] *= -1;
	if(ans[0] < 0 && ans[0] > -0.0005)
		ans[0] *= -1;

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

	return 0;
}

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>
float round3(float a){
	a=a*10000;
	if(int(a)%10>5)a+10;
	a=double (int (a));
	a=a/10000;

}
int main(){
	int a,b,c,d,e,f;
	double x,y;
	while((scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f))!=EOF){
		if(a*e==b*d){
			x=(c*e-b*f)/(a*e-b*d);
			y=(c*d-a*f)/(b*d-a*e);
		}else{
			x=(c*e-b*f)/(a*e-b*d);
			y=(c*d-a*f)/(b*d-a*e);
		}
		
		
		x=round3(x);
		y=round3(y);
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}