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

}
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!=0.0){
		  y=(f-c*d/a)/(e-b*d/a);
		  x=(c-b*y)/a;
		}
		else if(d!=0.0 && b!=0.0){
		  y=c/b;
		  x=(f-e*y)/d;
		}
		else if(d==0.0){
		  x=0.0;
		  if(b!=0.0) y=c/b;
		  else if(e!=0.0) y=f/e;
		}

		x=round3(x);
		y=round3(y);
		printf("%.3f %.3f\n",x,y);
	}
	return 0;
}

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

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

C++: #include <iostream>
#include <iomanip>
#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){
    cout << fixed;
    cout << setprecision(3);

    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<stdio.h>
#include<math.h>
int main(void){
    double a,b,c,d,e,f,A,x,y,X,Y,Z;

    while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f)!=EOF){
    A=a;
    a=a*d,b=b*d,c=c*d;
    d=d*A,e=e*A,f=f*A;

    Y=b-e,Z=c-f;
    y=Z/Y;
    x=(c-y*b)/a;
    x=x+0.0004,y=y+0.0004;
    x=x*1000,y=y*1000;
    x=floor(x);
    y=floor(y);
    x=x/1000,y=y/1000;

   printf("%.3lf %.3lf\n",x,y);
    }
   // printf("\na%lf\nb%lf\nc%lf\nd%lf\ne%lf\nf%lf\n%lf\n%lf",a,b,c,d,e,f,Y,Z);


    }

C++: #include<stdio.h>
int main(){
	int a,b,c,d,e,f;
	double x,y,z,v;
	while(1){
	scanf("%d %d %d %d %d %d",&a,&b,&c,&d,&e,&f);
	x=(double)(c*e-b*f)/(a*e-b*d);
	y=(double)(c*d-a*f)/(b*d-a*e);
	if(x>=-0.0005&&x<0.0005)	x=0;
	if(y>=-0.0005&&y<0.0005)	y=0;
	printf("%.3lf %.3lf\n",x,y);
}
}

C++: #include<iostream>
#include<stdio.h>
using namespace std;
int main(){
 double a,b,c,d,e,f,y,x;
 int i=0,n;
while(scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&d,&e,&f) != EOF){
  y=((c*d)-(a*f))/((b*d)-(a*e));
  x=((c*e)-(b*f))/((a*e)-(b*d));
  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()
{
	double a, b, c, d, e, f;
	while(cin>>a>>b>>c>>d>>e>>f){     
	  cout<<fixed<<setprecision(4);
	  cout <<(e*c - b*f) / (a*e - b*d) << " " << (a*f - d*c) / (a*e - b*d) << endl;
	}

    return 0;
}

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

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

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

int main(){
	cout << setprecision(3) << setiosflags(ios::fixed);
	double a,b,c,d,e,f;
	double x,y;
	while(cin >> a >> b >> c >> d >> e >> f){

		x = (c*e-b*f)/(a*e-b*d);
		if (x == 0.000) x += 0.000;
		y = (c*d-f*a)/(b*d-a*e);
		if (y == 0.000 )y += 0.000;

		cout << x << ' ' << y << endl;
	}
	return 0;
}

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

int main(void){
	double x=0,y=0;
	int a=0,b=0,c=0,d=0,e=0,f=0,i=0,j;
    
    while(scanf("%d %d %d %d %d %d\n",&a,&b,&c,&d,&e,&f) != EOF)
	{
		x = (c * e -b * f) / (a * e - b * d);
	    y = (c - a * x) / b;

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

C++: #include <iostream>

using namespace std;

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

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

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

    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 <iomanip>
using namespace std;

int main() {
    double a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        double x = 0.0;
        if (c*e - b*f != 0)
            x = static_cast<double>(c*e - b*f) / (a*e - b*d);
        double y = 0.0;
        if (a*f - c*d != 0)
            y = static_cast<double>(a*f - c*d) / (a*e - b*d);
        cout << fixed << setprecision(3);
        cout << x << " " << y << endl;
    }
}

C++: #include <stdio.h>

main() {
  double a,b,c,d,e,f;
  double x,y;
  while(scanf("%lf %lf %lf",&a,&b,&c)) {
    scanf("%lf %lf %lf",&d,&e,&f);
    b/=a; c/=a; a=1; a*=d; b*=d; c*=d;
    a=0; b-=e; c-=f; c/=b;

    e/=d; f/=d; d=1; f = f-e*c;
    //printf("%lf %lf %lf %lf %lf %lf\n",a,b,c,d,e,f);
    printf("%.3lf %.3lf\n",f,c);
  }
}

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

double round(double src,int n);

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

    while(cin>>a>>b>>c>>d>>e>>f){
        double x = (b*f-c*e)/(b*d-a*e);
        double y = (a*f-c*d)/(a*e-b*d);
        x = round(x,4);
        y = round(y,4);

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

double round(double src,int n){
    double p = src * pow(10,n-1);
    p = floor(p+0.5);
    p = p * pow(10,-(n-1));
    return p;
    
}