Question

Найдите значение выражения: скрин есть

Answer 1

Пошаговое объяснение:

1)

-5/8 + 1/4 + 7/12 = -15/24 + 6/24 + 14/24 =

(-15+6+14)/24 = 5/24

2)

1/5 + (-1/7) + 2/9 = 1/5 - 1/7 + 2/9 =

63/315 - 45/315 + 70/315 =

(63-45+70)/315 = 88/315

3)

-1/8 + 3/9 + (-5/36) = -1/8 + 3/9 - 5/36 =

-9/72 + 24/72 - 10/72 = (-9+24-10)/72 = 5/72

4)

7/8 + (-4/5) + (-1 1/20) = 7/8 - 4/5 - 1 1/20 =

35/40 - 32/40 - 1 2/40 = 3/40 - 42/40 = 39/40

5)

-11/18 + 5/12 + 7 1/9 = -22/36 + 15/36 + 7 4/36 =

-7/36 + 7 4/36 = -7/36 + 6 40/36 =

6 33/36 = 6 11/12

6)

2 4/15 + 2/5 + (-5 1/6) = 2 4/15 + 2/5 - 5 1/6 =

2 8/30 + 12/30 - 5 5/30 = 2 20/30 - 5 5/30 =

2 20/30 - 4 35/30 = -2 15/30 = -2 1/2