Решить уровнение 7/2+(4/9)*х=2/18
7/2 + (4/9)*х = 2/18 7/2 -2/18 = (4/9)*х 63/18 - 2/18 = (4/9) *х (4/9)*х = 61/18 х = 61/18 / 4/9 х = 61/22