2*(х+3)=86 3*(2х+4)+22=102-2
2*(x + 3) = 86 | / 2 x + 3 = 43 x = 43 - 3 x = 40 ======= 3*(2x + 4) + 22 = 102 - 2 6x + 12 + 22 = 100 6x + 32 = 100 6x = 100 - 32 6x = 48 x = 48/6 x = 8