Question

1)12:3 3/8-1 1/4:15/32 2)1 31/35:(2-8/9:1 19/45) 3) (1 1/35:4/5-1 8/35)*3 1/3 4) (7-1 5/9:7/24):20/27

Answer 1

Пошаговое объяснение:

№1

1) 12 : 3 3/8 = 12 : 27/8 = 12 * 8/27 = 4 * 8/9 = 32/9 = 3 5/9

2) 1 1/4 : 15/32 = 5/4 * 32/15 = 1/1 * 8/3 = 8/3 = 2 2/3

3) 3 5/9 - 2 2/3 = 3 5/9 - 2 6/9 = 2 14/9 - 2 6/9 = 8/9

№2

1) 8/9 : 1 19/45 = 8/9 : 64/45 = 8/9 * 45/64 = 1/1 * 5/8 = 5/8

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

3) 1 31/35 : 1 3/8 = 66/35 : 11/8 = 66/35 * 8/11 = 6/35 * 8/1 = 48/35 = 1 13/35

№3

1) 1 1/35 : 4/5 = 36/35 * 5/4 = 9/7 * 1/1 = 9/7 = 1 2/7

2) 1 2/7 - 1 8/35 = 1 10/35 - 1 8/35 = 2/35

3) 2/35 * 3 1/3 = 2/35 * 10/3 = 2/7 * 2/3 = 4/21

№4

1) 1 5/9 : 7/24 = 14/9 * 24/7 = 2/3 * 8/1 = 16/3 = 5 1/3

2) 7 - 5 1/3 = 6 3/3 - 5 1/3 = 1 2/3

3) 1 2/3 : 20/27 = 5/3 * 27/20 = 1/1 * 9/4 = 9/4 = 2 1/4