If z is the sum of x and y, then which one of the following must equal x – y ?
Choose the correct choice from the following options.
A) z+y B) x-2y C) x+y D) z-2y E) 2z-y
Given z= x+y if you subtracts both side with -2y   z-2y = x-y   Answer : z-2y
<result>D</result>
If z is the sum of x and y, then which one of the following must equal x – y ?