#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main()
{
    float a_1, a_2, b_1, b_2, c_1, c_2, x, y;
	
    printf("Le systeme à résoudre est :\n");
    printf("a_1 x + b_1 y = c_1\n");
    printf("a_2 x + b_2 y = c_2\n");
    printf("Le coefficient a_1 : ");
    scanf("%f", &a_1);
    printf("Le coefficient b_1 : ");
    scanf("%f", &b_1);
    printf("Le coefficient c_1 : ");
    scanf("%f", &c_1);
    printf("Le coefficient a_2 : ");
    scanf("%f", &a_2);
    printf("Le coefficient b_2 : ");
    scanf("%f", &b_2);
    printf("Le coefficient c_2 : ");
    scanf("%f", &c_2);
    
    x = ((c_1*b_2 - b_1*c_2)/(a_1*b_2 - b_1*a_2));
    y = ((a_1*c_2 - c_1*a_2)/(a_1*b_2 - b_1*a_2));
    
    printf("La solution est (x,y) = (%.2f, %.2f)\n", x, y);
	
	//system("pause");            //decommente si le terminal se ferme
	return 0;
}