-4x - 20
Step-by-step explanation:
-1/2 (32x - 40) + ( 20x - 40)
open the bracket
-1/2 × 32x = -16x
-1/2 × -40 = 20
.
. . -16x + 20 +20x - 40
collect like term
-16x + 20x + 20 - 40
4x - 20
simplify = 4(x-5)
