Question

Simplify the expression.

7(a + 3b) + 2(a - b)

A.18a + 18b

B.9a + 23b

C.9(2a + 2b)

D.9a + 19b

Answer 1

The answer would be d 9a+19b

Answer 2

D.9a+19b

Explanation:

7(a+3b)+2(a-b)

7*a=7a

7*3b=21b

2*a=2a

2*-b=-2b

7a+21b+2a-2b

7a+2a=9a

21b-2b=19b

Hope this helps:)