Question

Select the property NOT used in the following

(2+a) - 7
(a + 2) - 7
a + (2 - 7)
a + (-5)
a - 5

associative

commutative

distributive

subtraction

Answer 1

(2 + a) = (a + 2) it's commutative property

(a + 2) - 7 = a + (2 - 7) it's associative property

2 - 7 = -5 it's subtraction

Answer: distributive property { a(b + c) = ab + ac }