Question

x-y=3 (a) work out the value of 5(x-y) (b) work out the value of 2x-2y (c) work out the value of y-x

Answer 1

Step-by-step explanation:

x-y=3

(a) 5(x-y) = 5×3 = 15

(b) 2x-2y = 2(x-y) = 2×3 = 6

(c) y-x = -(x-y) = -3