Go: package main

import (
  "fmt"
)

func main() {
  var a,b,c,d,e,f float64
  var x,y float64
  for _, err := fmt.Scan(&a, &b, &c, &d, &e, &f); err == nil;
   _, err = fmt.Scan(&a, &b, &c, &d, &e, &f) {
    y = (a*f-c*d)/(a*e-b*d)
    x = (c-b*y)/a
    fmt.Printf("%.3f %.3f\n", x,y)
  }
}

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

using namespace std;

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

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

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

			if(x % 10000 >= 5){
				x += 0.001;
			}if(y % 10000 >= 5){
				y += 0.001;
			}

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

	return 0;
}

C++: #include<iostream>
int main(){for(float a,b,c,d,e,f,x,y,g,h;std::cin.eof()||(std::cin>>a>>b>>c>>d>>e>>f,1);printf("%.3f %.3f\n",x,y))g=b*d-a*e,h=c*d-a*f,d*g?(x=f/d-e*h/g/d,y=b?c/b-a*x/b:f/e-d*x/e):(y=h/g,x=a?c/a-b*y/a:f/d-e*y/d);}

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

#define REP(i,n) for(int i=0;i<(int)(n);++i)

int main() {
  for(;;) {
    double a, b, c, d, e, f;
    if( !(cin >> a >> b >> c >> d >> e >> f) )break;
    double det = 1.0 / (-b * d + a * e);
    double x = det * (e * c - b * f);
    double y = det * (-d * c + a * f);
    if( x > y ) swap( x, y );
    double EPS = 1e-8;

    char buf[128];
    sprintf(buf, "%.4f", x + EPS);
    buf[ strlen(buf) - 1 ] = ' ';
    printf(buf);
    sprintf(buf, "%.4f", y + EPS);
    buf[ strlen(buf) - 1 ] = '\n';
    printf(buf);
  }
  return 0;
}

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


int main()
{
	double x1, y1, a, x2, y2, b;
	cin >> x1 >> y1 >> a >> x2 >> y2 >> b;


	double d1 = x2;
	double d2 = x1;
	double xx1 = d1 * x1;
	double xy1 = d1 * y1;
	double a1 = d1 * a;
	double xx2 = d2 * x2;
	double xy2 = d2 * y2;
	double b1 = d2 * b;
	double y = xy1 - xy2;
	double c = a1 - b1;
	y =  c / y;


	d1 = y2;
	d2 = y1;
	xx1 = d1 * x1;
	xy1 = d1 * y1;
	a1 = d1 * a;
	xx2 = d2 * x2;
	xy2 = d2 * y2;
	b1 = d2 * b;
	double x = xx1 - xx2;
	c = a1 - b1;
	x = c / x;
	if (x == 0)
	{
		x = 0;
	}
	if (y == 0)
	{
		y = 0;
	}
	printf("%.3lf %.3lf\n", x , y);
	return 0;
}

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

int main(void)
{
	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);
		if (x == -0) x = 0;
		if (y == -0) y = 0;
		printf("%.3f %.3f\n", x, y);
	}
	return 0;

}

C++: #include <cstdio>
int main() {
 double a,b,c,d,e,f;
 while(scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&e,&f)!=EOF){
  prinff("%lf %lf\n",(c * e - b * f) / (a * e - b * d),(a*f-d*c)/(a*e-b*d));
 };
 return 0;
};

C++: #include<stdio.h>

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

C++: #include<stdio.h>
int main() {
	double a, b, c, d, e, f;
	double x, y, z;
	while (1) {
		scanf("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f);
		z = d / a;
		b *= z;
		c *= z;
		y = (c - f) / (b - e);
		x = (f - e*y) / d;
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}

C++: #include <stdio.h>
float a,b,c,d,e,f,t;
main(){
  for(;~scanf("%f%f%f%f%f%f",&a,&b,&c,&d,&e,&f);
    t=a*e-b*d,printf("%.3f %.3f\n",(e*c-b*f)/t+0.,(a*f-d*c)/t+0.)
  );
  return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <sstream>

using namespace std;

using DataSet = vector<double>;

void readInputData(vector<string>& input_data){
    string buff;
    while(getline(cin, buff)){
        input_data.push_back(buff);
    }
}

void _parseString(const string& input_data, DataSet& data_set) {
    data_set.resize(6);

    stringstream ss;
    ss << input_data;
    ss >> data_set[0] >> data_set[1] >> data_set[2]
        >> data_set[3] >> data_set[4] >> data_set[5];
}

void parseString(const vector<string>& input_data, vector<DataSet>& data_set) {
    data_set.resize(input_data.size());
    for(int i = 0; i < input_data.size(); ++i) {
        DataSet buff;
        _parseString(input_data[i], buff);
        data_set[i] = buff;
    }
}

double determinant2d(const DataSet& data){
    return data[0] * data[4] - data[1] * data[3];
}

void inverse2d(DataSet& data){
    double t = data[0];
    data[0] = data[4];
    data[4] = t;

    data[1] = -data[1];
    data[3] = -data[3];
}


void calculateXY(const DataSet& data, double det, vector<double>& result){
    result.resize(2);

    result[0] = (data[0] * data[2] + data[1] * data[5]) / det;
    result[1] = (data[3] * data[2] + data[4] * data[5]) / det;
}

void solve(vector<DataSet>& data_set){
    for(int i = 0; i < data_set.size(); ++i){
        vector<double> buff;

        double det = determinant2d(data_set[i]);

        inverse2d(data_set[i]);

        calculateXY(data_set[i], det, buff);

        cout << buff[0] << " " << buff[1] << endl;
    }
}



void doAllProcess(){
    vector<string> input_data;
    readInputData(input_data);

    vector<DataSet> data_set;
    parseString(input_data, data_set);

    solve(data_set);
}


int main(){
    doAllProcess();
    return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int main(void){
	float equ[2][3];
	while(cin){
		for(int i=0;i<2;i++)
			for(int j=0;j<3;j++)
				cin >> equ[i][j];
		float delta = -equ[0][0]*equ[1][1]+equ[0][1]

*equ[1][0];
		float y = (-equ[0][0]*equ[1][2]+equ[0][2]*equ

[1][0])/delta;
		float x = (equ[0][2]-equ[0][1]*y)/equ[0][0];
		printf("%.3f %.3f\n",x,y);
	}
}

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 mat = a * e - b * d;
		double dx = c * e - b * f;
		double dy = a * f - d * c;

		printf("%.3f %.3f\n", dx/mat, dy/mat);
	}
	return 0;
}

C++: /*
	ax+by=c, dx+ey=fのx,y 
	x=(E1*B2-B1*E2)/(A1*B2-B1*A2)
	y=(E2*A1-E1*A2)/(A1*B2-A2*B1)
*/

#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).eof()){
		x = (c*e-f*b)/(a*e-b*d);
		y = (f*a-d*c)/(a*e-d*b);
	
		cout << fixed << setprecision(3) << x << " " << y << endl;
	}
}

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 ){

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

		cout << showpoint << setprecision(3);
		cout << setiosflags( ios::fixed );
		cout << ( x == -0.0 ? 0.0 : x ) << " " << ( y == -0.0 ? 0.0 : y ) << endl;

	}
}

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

int main(){
	float x, y;
	int a, b, c, d, e, f, xx, yy;
	string p, q;
	while (true){
		cin >> a >> b >> c >> d >> e >> f;
		if (cin.eof()){
			break;
		}
		if (a == 0){
			y = c / b;
			x = (f - e * y) / d;
		}
		else if (b == 0){
			x = c / a;
			y = (f - d * x) / e;
		}
		else if(d == 0){
			y = f / e;
			x = (c - b * y) / a;
		}
		else if(e==0){
			x = f / d;
			y = (c - a * x) / b;
		}
		else{
			x = (c*e - b*f) / (e*a - b*d);
			y = (c - a*x) / b;
		}
		xx = x / 1;
		yy = y / 1;
		p = to_string(xx);
		q = to_string(yy);
		p += ".";
		q += ".";
		b = x * 10;
		c = y * 10;
		for (int i = 1;i<4;i++){
			p += to_string((b*10) % 10);
			q += to_string((c*10) % 10);
			x = x * 10;
			y = y * 10;
			b = x;
			c = y;
		}
		cout << p << " " << q << endl;
	}
	return 0;
}