/* Giai he phuong trinh bac nhat */

#include <stdio.h>

void main()

{

int a, b, c, d, e, f, dthuc;

float x, y;

printf("

Nhap vao cac he so a,b,c,d,e,f : ");

scanf("%d%d%d%d%d%d", &a, &b, &c, &d, &e, &f);

dthuc = b*d - e*a;

if (dthuc != 0)

{

y = (float)(c*d-a*f)/dthuc;

x = (float)(b*f-c*e)/dthuc;

printf("Nghiem x = %f, y = %f", x, y);

}

else

printf("

He phuong trinh vo ngiem.");

getch();

}