3х - 4 + 2х = 6 + 2х - 4 3х + 2х - 2х = 6 + 4 - 4 3х = 6 х = 2 ------------------------------- - 6а + 16 = 4а - 6а - 24 - 6а - 4а + 6а = - 24 - 16 -4а = - 40 а = 10 ------------------------------ 2(х - 6) - х = 3х + 4х 2х - 12 - х = 3х +4х х - 3х - 4х = 12 - 6х = 12 х= - 2