Which property is not used to simplify the following expression? 2 . (x + 5) + 7x = (2x + 10) + 7x = (10 + 2x) + 7x = 10 + (2x + 7x) = 10 + 9x = 9x + 10 a. commutative property of addition b. associative property of addition c. commutative property of multiplication d. distributive property
we did not use the commutative property of multiplication because it states that (a*b)*c is the same as a*(b*c). but there was no part that used this property
