Question

найдите значение выражений 25/30-20/60+15/30

Answer 1

25/30 - 20/60 + 15/30 = 25/30 - 10/30 + 15/30 = 30/30 = 1.

Answer 2

помогите

Answer 3

9/36 + 36/72 - 1/9 = 9/36 + 1/36 - 4/36 = 6/36 = 1/6

Answer 4

19/21 - 16/42 + 1/7 = 19/21 - 8/21 + 3/21 = 14/21 = 2/3.

Answer 5

4/6 + 1/3 - 1/100 = 2/3 + 1/3 - 1/100 = 3/3 - 1/100 = 1 - 1/100 = 99/100

Answer 6

и с последним помогите))))