Question

15+7(3x+7)=13x como resolvo essa equacão ???

Answer 1

15+7(3x+7)=13x
15+21x+49=13x
21x-13x=-15-49
8x=-64
x=-64/8
x=-8
Resposta:  -8

Answer 2

15 + 7(3X + 7) = 13X 15 + 21X + 49 = 13X 21X + 15 + 49 = 13X 21X + 64 = 13X 21X - 13X = - 64 8X = - 64 X = - 64/8 X = - 8