Go: package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextFloat64() (float64, error) {
	return strconv.ParseFloat(nextString(), 64)
}

func mathRound(f float64) float64 {
	return math.Floor(f + .5)
}

func round(x float64) float64 {
	if math.Abs(x) < 0.001 {
		return 0
	}
	return mathRound(x*1000) / 1000
}

func main() {
	scanner.Split(bufio.ScanWords)
	for {
		a, err := nextFloat64()
		if err != nil {
			break
		}
		b, _ := nextFloat64()
		c, _ := nextFloat64()
		d, _ := nextFloat64()
		e, _ := nextFloat64()
		f, _ := nextFloat64()

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

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

C++: #include <cstdio>

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

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

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

	while (1) {
		cin>>a>>b>>c>>d>>e>>f;
		if (cin.eof()) break;

		x = (f/e-c/b)/((-a/b)-(-d/e));
		if ((int)(x*1000)%1000>=5) x+=0.001;
		y = (-a/b)*x+c/b;
		if ((int)(y*1000)%1000>=5) y+=0.001;

		cout<<setprecision(3)<<setiosflags(ios::fixed)<<x<<" "<<y<<endl;
	}

	return 0;
}

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


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

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

using namespace std;

double ansX[10000], ansY[10000];

int main(int argc, char* argv[])
{
	int count = 0;
	double a, b, c, d, e, f;
	double b1, c1, e1, f1;

	while (1) {
		cin >> a >> b >> c >> d >> e >> f;
		if (cin.eof()) break;

		b1 = b * d;
		c1 = c * d;
		e1 = e * a;
		f1 = f * a;

		if (b1 == e1) continue;
		ansY[count] = (c1 - f1) / (b1 - e1);
		ansX[count] = (c - b * ansY[count]) / a;
		count++;
	}

	for (int i = 0; i < count; i++) {
		printf("%.3f %.3f", ansX[i], ansY[i]);
	}
	
	return 0;
}

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

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

using namespace std;

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


double x(double, double, double, double, double, double) {

	return (c*e - b*f) / (a*e - b*d);
}

double y(double, double, double, double, double, double) {

	return (a*f - c*d) / (a*e - b*d);
}

double round(double dat, int keta ){

	int fct;
	fct =  (int) pow(10, keta - 1);
	dat *= fct;
	dat += (dat < 0) ? -0.5 : 0.5;
	dat = (int)(dat);
	dat /= fct;
	return dat;
}

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

	x1 = x(a, b, c, d, e, f);
	y1 = y(a, b, c, d, e, f);

	cin >> a >> b >> c >> d >> e >> f;

	x2 = x(a, b, c, d, e, f);
	y2 = y(a, b, c, d, e, f);

	cout << fixed << setprecision(3) << round(x1,3) << " " << round(y1,3) << endl;
	cout << fixed << setprecision(3) << round(x2,3) << " " << round(y2,3) << endl;

	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 = (c - b * y) / a;


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

	}

	return 0;

}

C++: #include<cstdio>

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

C++: #define _USE_MATH_DEFINES
#define INF 0x3f3f3f3f
#include <cstdio>
#include <iostream>
#include <sstream>
#include <cmath>
#include <cstdlib>
#include <algorithm>
#include <queue>
#include <stack>
#include <limits>
#include <map>
#include <string>
#include <cstring>
#include <set>
#include <deque>
#include <bitset>
#include <list>
#include <cctype>
#include <utility>
 
using namespace std;
 
int main()
{
  int a,b,c,d,e,f;
  double A[2][2];
  double B[2];
  double inv_A[2][2];
  while(~scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f)){
    int det = a*e-b*d;
    A[0][0]=a; A[0][1] = b;
    A[1][0]=d; A[1][1] = e;
    B[0] = c;
    B[1] = f; 
 
    inv_A[0][0]=A[1][1]; inv_A[0][1]=-A[0][1];
    inv_A[1][0]=-A[1][0]; inv_A[1][1]=A[0][0];
 
    double res[2];
    res[0]=0;
    res[1]=0;
 
    for(int j=0;j<2;j++){
      for(int k=0;k<2;k++){
	res[j]+=1.0/(double)det *inv_A[j][k]*B[k];
      }
    }
 
    printf("%.3f %.3f\n",res[0],res[1]);
  }
}

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


int main() {
  float a, b, c, d, e, f;
  float x, y;
  
  while(cin >> a >> b >> c >> d >> e >> f) {
    x=(b*f-c*e)/(b*d-a*e);
    cout<<x;
    cout<<" ";
    
    y=(c*d-a*f)/(b*d-a*e);
    cout<<y;
    cout<<endl;
  }
  
  return 0;
}

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

int main(void){
	int a,b,c,d,e,f;
	double x,y;
	while(cin >> a >> b >> c >> d >> e >> f){
		y = (f - c - e)/(a + b);
		x = (c/a) - (b * (f-c-e))/(a * ( a + b));
		cout << x << ' ' << y << endl;
	}
	return 0;
}

C++: #include <stdio.h>

int main(void){
	int a,b,c,d,e,f;
	float x,y;
	while(scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f)!=EOF){
		x=(c*e-b*f)/(a*e-d*b);
		y=(d*c-a*f)/(d*b-a*e);
		printf("%0.3f %0.3f\n",x,y);
	}
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
	double a,b,c,d,e,f,x,y;
	while(cin>>a>>b>>c>>d>>e>>f){
        x = (double)((e*c-b*f) / (a*e-b*d));
		y = (double)((-(d*c)+a*f) / (a*e-b*d));
		if(x==0)	x=0;
		if(y==0)	y=0;
    	cout<<setiosflags(ios::fixed)<<setprecision(3)<<x<<" "<<y<<endl;
    }
	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 <stdio.h>
#include <math.h>
int main(){
double a, b, c, d, e, f;
double det;
double x, y;
while(scanf("%lf %lf %lf %lf %lf %lf", &a, &b, &c, &d, &e, &f) != EOF){
det = a * e - b * d;
if(det != 0){
x = (e * c - b * f) / det;
y = (a * f - d * c) / det;
x = (x == fabs(x)) ? fabs(x) : x;
y = (y == fabs(y)) ? fabs(y) : y;
printf("%.3f %.3f\n", x , y);
}
}
return 0;
}

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

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

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

int main() {
	double a, b, c, d, e, f, x, y;
	while(cin >>a >>b >>c >>d >>e >>f){
		x = (b*f - c*e) / (b*d - a*e);
		y = (f-(d*x))/e;
		x = (double)(int)(((x * 1000) + (0.5f - (x < 0)))) / 1000;
		y = (double)(int)(((y * 1000) + (0.5f - (y < 0)))) / 1000;
		printf("%.3f %.3f\n", x, y);
	}
	return 0;
}