Question

8(2x+1)+1=3(4x-2)-1 Вот третье.

Answer 1

$8(2x + 1) + 1 = 3(4x - 2) - 1 \\ 16x + 8 + 1 = 12x - 6 - 1 \\ 16x - 12x = - 7 - 9 \\ 4x = - 16 \\ x = - 16 \div 4 \\ x = - 4$