Question

If x+y= Z/2

& x-y=zero so..

a) Z = 2xy
b) y = 2z-4y
c) 2x = 2z
d) 2x = z-2y

Answer 1

D

Explanation:

x + y =
`(z)/(2)`

multiply through by 2 to clear the fraction

2x + 2y = z ( subtract 2y from both sides )

2x = z - 2y