Question

5 класс 510 есеп матем​

Answer 1

Ответ:

Пошаговое объяснение:

1) (7/15-1/6)+2/5=(42/90-15/90)+36/90=27/90+36/90=63/90=7/10

2) (3/8-1/9)+25/36=(27/72-8/72)+50/72=19/72+50/72=69/72=23/24

3) (8/9-5/6)+2/3=(48/54-35/54)+36/54=13/54+36/54=39/54=13/18

4) (7/8-13/20)+9/10=(70/80-52/80)+72/80=18/80+72/80=90/80=1 1\9

5) (7/18-1/12)+5/6=(14/36-3/36)+30/36=11/36+30/36=41/36=1 5/36

6)(3/4-8/15)+17/20=(45/60-32/60)+41/60=13/60+41/60+54/60=27/30=9/10

Answer 2

Ответ:

Пошаговое объяснение:

1) = (14/30 - 5/30) + 12/30 = 9/30 + 12/30 = 21/30 = 7/10

2) = (27/72 - 8/72) + 50/72 = 19/72 + 50/72 = 69/72 = 23/24

3) = (16/18 - 15/18) + 12/18 = 1/18 + 12/18 = 13/18

4) = (35/40 - 26/40) + 36/40 = 9/40 + 36/40 = 45/40 = 9/8 = 1. 1/8

5) = (14/36 - 3/36) + 30/36 = 11/36 + 30/36 = 41/36 =

1. 5/36

6) = (45/60 - 32/60) + 51/60 = 13/60 + 51/60 = 64/60 =

1. 4/60 = 1. 1/15