Question

Пожалуйста Помогите дам много баллов!Нужно срочно!!!

Answer 1

Пошаговое объяснение:

№25

1) 1 1/2 - 3/5 = 1 5/10 - 6/10 = 15/10 - 6/10 = 9/10

2) 4 1/6 * 9/10 = 25/6 * 9/10 = 5/2 * 3/2 = 15/4 = 3 3/4

3) 3/4 + 5/6 = 9/12 + 10/12 = 19/12

4) 19/12 * 6 = 19/2 * 1 = 19/2 = 9 1/2

5) 3 3/4 + 9 1/2 = 3 3/4 + 9 2/4 = 12 5/4 = 13 1/4

№26

1) 3 3/5 - 1 7/9 = 3 27/45 - 1 35/45 = 2 72/45 - 1 35/45 = 1 37/45

2) 1/2 - 1/3 = 3/6 - 2/6 = 1/6

3) 24 - 1 37/45 = 23 45/45 - 1 37/45 = 22 8/45

4) 22 8/45 + 1/6 = 22 16/90 + 15/90 = 22 31/90

№27

1) 6 - 2 4/5 = 5 5/5 - 2 4/5 = 3 1/5

2) 3 1/5 * 3 1/8 = 16/5 * 25/8 = 2/1 * 5/1 = 10/1 = 10

3) 10 - 1 3/5 = 9 5/5 - 1 3/5 = 8 2/5

4) 8 2/5 + 1/4 = 8 8/20 + 5/20 = 8 13/20

№28

1) 2 1/2 + 1 3/4 = 2 2/4 + 1 3/4 = 3 5/4 = 4 1/4

2) 4 * 4 1/4 = 4 * 17/4 = 1 * 17/1 = 17/1 = 17

3) 6 2/3 + 4 4/5 = 6 10/15 + 4 16/20 = 10 26/20 = 11 6/20 = 11 3/10

4) 11 3/10 : 2 = 113/10 * 1/2 = 113/20 = 5 13/20

5) 17 - 5 13/20 = 16 20/20 - 5 13/20 = 11 7/20