#include<stdio.h>
#include<conio.h>

void main()
{
clrscr();
   float a,b,c,x,y,z;
   a=9;
   b=12;
   c=3;
   x= a-b/3+c*2-1;
   y= a-b/(3+c)*(2-1);
   z=a-(b/(3+c)*2)-1;

   printf("x = %f\n",x);
   printf("y = %f\n",y);
   printf("z = %f\n",z);
getch();
}