/* 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();

}