ж) y/9 - (y + 1/3) = 1/6 - (8y/9 + 0.5)

y/9 - y - 1/3 = 1/6 - 8y/9 - 0.5

y/9 - 9y/9 - 3/9 = 3/18 - 16y/18 - 9/18

-8y/9 - 1/3 = -16y/18 - 6/18

-8y/9 - 3/9 = -16y/18 - 1/3

-8y/9 + 16y/18 = -1/3 + 1/3

-16y/18 + 16y/18 = 0

0 = 0