Question

10 - 2(x + 3)= 8 + 3.(2x + 5)

Answer 1

10-2.(x+3)=8+3.(2x+5)
10-2x-6=8+6x+15
-2x-6x=8+15+6-10
-8x=8+21-10
-8x=8+11
-8x=19.(-1)
8x=-19
x=-19/8

Answer 2

Fazemos a distributiva:

10-2x-6=8+6x+15
10-15-6-8=6x+2x
8x=-19
x=-19/8

Espero ter ajudado