Question

5(4x+7) - 2 x = ___ x +21

A.-20
B.20
C.18
D.-18

Answer 1

I don't know did you write the question correctly because:

5 ( 4 x + 7 ) - 2 x = 5 ∙ 4 x + 5 ∙ 7 - 2 x = 20 x + 35 - 2 x = 18 x + 35

5 ( 4 x + 7 ) - 2 x = 18 x + 35 = 18 x + 14 + 21