Question

Вычислите:(21 4/15+7-9 7/30)+(16 2/5)-(8 1/5+1 2/15)-4
ПОМОГИТЕ СРОЧНО пж​

Answer 1

Пошаговое объяснение:

1) 21 4/15 + 7 = 28 4/15

2) 28 4/15 - 9 7/30 = 28 8/30 - 9 7/30 = 19 1/30

3) 16 2/5 - 3 1/30 = 16 12/30 - 3 1/30 = 13 11/30

4) 8 1/5 + 1 2/15 = 8 3/15 + 1 2/15 = 9 5/15 = 9 1/3

5) 19 1/30 + 13 11/30 = 32 12/30 = 32 2/5

6) 32 2/5 - 9 1/3 = 32 6/15 - 9 5/15 = 23 1/15

7) 23 1/15 - 4 = 19 1/15