Indicate which property is illustrated in step 4.
step 1 (-9) + 9 + 5(7 + 3) = (-9) + 9 + (5 • 7) + (5 • 3)
step 2 = (-9) + 9 + (35) + (15)
step 3 = (-9) + 9 + 50
step 4 = 0 + 50
step 5 = 50
associative property of multiplication
commutative property of division
inverse property of multiplication
inverse property of addition