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<iostream>
#include<string>
#include<algorithm>
#include<map>
#include<set>
#include<utility>
#include<vector>
#include<cmath>
#include<cstdio>
#define loop(i,a,b) for(int i=a;i<b;i++) 
#define rep(i,a) loop(i,0,a)
#define pb push_back
#define mp make_pair
#define it ::iterator
#define all(in) in.begin(),in.end()
const double PI=acos(-1);
const double ESP=1e-10;
using namespace std;
int main(){
  double a,b,c,d,e,f;
  while(cin>>a){
    cin>>b>>c>>d>>e>>f;
    double x=(c*e-b*f)/(a*e-b*d);
    double y=(f-d*x)/e;
    if(x==0)x=0;
    if(y==0)y=0;
    x+=0.00049999;y+=0.0004999;
    printf("%.3f %.3f\n",x,y);
  }
}

    
    /*
      ey=f-dx
      y=(f-dx)/e
      ax+b(f-dx)/e=c
      aex+df-bdx=ce
      (ae-bd)x=ce-df
      x=(ce-df)/(ae-bd)

  y=(f-dx)/e
  y=(f



a b  x  c
d e  y  f

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

C++: #include<cstdio>
#include<cmath>
int main(){
    double a[6];
    double x,y;
    for(;;){
        for(int i=0;i<6;i++){
            if(scanf("%lf",&a[i])==-1)return 0;
        }
        if(a[0]==0){
            y=a[2]/a[1];
            x=(a[5]-a[4]*y)/a[3];
        }else if(a[1]==0){
            x=a[2]/a[0];
            y=(a[5]-a[3]*x)/a[4];
        }else if(a[3]==0){
            y=a[5]/a[4];
            x=(a[2]-a[1]*y)/a[0];
        }else if(a[4]==0){
            x=a[5]/a[3];
            y=(a[2]-a[0]*x)/a[1];
        }else{
            y=(a[2]-(a[5]*(a[0]/a[3])))/(a[1]-(a[4]*(a[0]/a[3])));
            x=(a[2]-a[1]*y)/a[0];
        }
        printf("%.3lf %.3lf\n",rint(x*1000)/1000.0,rint(y*1000)/1000.0);
    }
}

C++: #include <iostream>
#include <cmath>
#include <algorithm>
#include <string>
#include <stdio.h>
using namespace std;
int main() {
    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=(c-b*y)/a;
        printf("%.3f %.3f\n",x,y);
    }
}

C++: #include<cstdio>
int main(void)
{
	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=(a*f-d*c)/(-(d*b)+a*e);
		x=(c-b*y)/a;
		if(x==0)
		{
			x=0;
		}
		if(y==0)
		{
			y=0;
		}
		printf("%.3lf %.3lf\n",x,y);
	}
	return 0;
}
/*
ax=c-by
->x=(c-by)/a
d((c-by)/a)+ey=f
(dc-dby)/a+ey=f
(dc-dby)+aey=af
-dby+aey=af-dc
y(-db+ae)=af-dc
->y=(af-dc)/(-db+ae)
*/

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

int main(){
	while(true){
		double a,b,c,d,e,f;
		cin>>a>>b>>c>>d>>e>>f;
		if(cin.fail()) break;
		cout<<(c*e-b*f)/(a*e-b*d)<<" "<<(c*d-a*f)/(b*d-a*e)<<endl;
	}
	return 0;
}

C++: #include <iostream>
#include <string>
#include <map>
#include <vector>
#include <deque>
#include <algorithm>
#include <cmath>
#include <cstdio>
#define rep(i, a, b) for(int i = a; i < b; i++)
using namespace std;
typedef long long ll;
int a, b, c, d, e, f;

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

C++: #include<iostream>
using namespace std;
int main() {
return 0;
}

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

void calc(std::vector<double> first, std::vector<double> second) {
    double div;

    div = second[0] / first[0];
    second[0] = 0;
    second[1] -= first[1] * div;
    second[2] -= first[2] * div;
    second[2] /= second[1];
    second[1] = 1;

    first[2] -= first[1] * second[2];
    first[1] = 0;
    first[2] /= first[0];
    first[0] = 1;

    std::cout << std::fixed << std::setprecision(3) << first[2] << " " << second[2] << std::endl;
    return;
}

int main(void) {
    std::vector<double> first(3, 0);
    std::vector<double> second(3, 0);
    while(std::cin >> first[0]) {
        for (int i = 1; i < 3; i++) {
            std::cin >> first[i];
        }
        for (int i = 0; i < 3; i++) {
            std::cin >> second[i];
        } 
        calc(first, second);
    }
    return 0;
}

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

C++: #include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <queue>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>
#include <stdio.h>
#include <complex>

using namespace std;

//conversion
//------------------------------------------
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<int, PII> TIII;
typedef long long LL;
typedef vector<LL> VLL;

//container util

//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define MT(a,b,c) MP(a, MP(b, c))

//repetition//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

int main(){
	double a,b,c,d,e,f;
	while(!cin.eof()){
		cin>>a>>b>>c>>d>>e>>f;
		double x = (c*e-b*f)/(a*e-b*d);
		double y = (c*d-a*f)/(b*d-a*e);
		if(abs(x)<0.0005)x=0.000;
		if(abs(y)<0.0005)y=0.000;
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}

C++: #include<stdio.h>
int main(void) {
	int a, b, c, d, e, f, g, h = 0;
	while (scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f) != EOF)
		for (double x = -1000; x <= 1000; x++)
		{
			for (double y = -1000; y <= 1000; y++)
			{
				if (a*x + b*y == c&&d*x + e*y == f)
				{
					x += 0.0005;
					y += 0.0005;
					printf("%.3f %.3f\n", x, y);
				}
			}
		}
	h++;
	return 0;
}

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

int main(void) {
	using namespace std;
	double a, b, c, d, e, f;
	double x, y;
	while (std::cin >> a >> b >> c >> d >> e >> f) {
		y = (double)(f*a - d*c) / (e*a - d*b);
		x = (c - b*y) / a;
		cout << showpoint << fixed << setprecision(3)<< x << ' ' << y << endl;
	}

	return 0;
}