Question

15+3 (× +2)= -7× +2(× +1)

Answer 1

Olá!!!
 15 + 3.(x+2) = -7x+2.(x+1)
15+3x+6=-7x+2x+2----isola o x
3x+7x-2x=-15-6+2
8x=-19

x=-19/8

Tenha bons estudos!!!

Answer 2

15 + 3(x + 2) = - 7x + 2(x + 1)
15 + 3x +  6 = - 7x + 2x + 2
21 + 3x = - 5x + 2
3x + 5x = 2 - 21
8x = - 19
x = - 19/8

S = {- 19/8}