Verified answer

Пошаговое объяснение:

1)

2/3х - 1/2х = (2/3 - 1/2) * х = (4/6 - 3/6) * х = 1/6 * х = 1/6

2)

1/4х + 1/3х = (1/4 + 1/3) * х = (3/12 + 4/12) * х = 7/12 * х = 7/12х

3)

-7/12у - 5/6у = (-7/12 - 5/6) * у = (-7/12 - 10/12) * у =

-17/12 * у = -1 5/12у

4)

8/15у - 2/5у = (8/15 - 2/5) * у = (8/15 - 6/15) * у = 2/15 * у = 2/15у

5)

5/9m + 2/3m = (5/9 + 2/3) * m = (5/9 + 6/9) * m = 11/9 * m = 1 2/9 * m = 1 2/9m

6)

3/4m - 1/6m = (3/4 - 1/6) * m = (9/12 - 2/12) * m = 7/12 * m = 7/12m