Verified answer

Пошаговое объяснение:

№1

1) 3,5 + 2 1/3 = 3 5/10 + 2 1/3 = 3 15/30 + 2 10/30 = 5 25/30 = 5 5/6

2) 3,5 - 2 1/3 = 3 5/10 - 2 1/3 = 3 15/30 - 2 10/30 = 1 5/30 = 1 1/6

3) 5 5/6 : 1 1/6 = 35/6 : 7/6 = 35/6 * 6/7 = 5/1 * 1/1 = 5/1 = 5

№2

1) 5,6 - 3 1/3 = 5 6/10 - 3 1/3 = 5 18/30 - 3 10/30 = 2 8/30 = 2 4/15

2) 1,5 + 1 1/3 = 1 5/10 + 1 1/3 = 1 15/30 + 1 10/30 = 2 25/30 = 2 5/6

3) 2 4/15 : 2 5/6 = 34/15 : 17/6 = 34/15 * 6/17 = 2/5 * 2/1 = 4/5

№3

1) 16 - 8 1/3 = 15 3/3 - 8 1/3 = 7 2/3

2) 7 2/3 : (-2 5/9) = 23/3 : (-23/9) = 23/3 * (-9/23) = 1/1 * (-3/1) = -3/1 = -3

№4

1) 15 - 9 2/3 = 14 3/3 - 9 2/3 = 5 1/3

2) 5 1/3 : (-3 5/9) = 16/3 : (-32/9) = 16/3 * (-9/32) = 1/1 * (-3/2) = -3/2 = -1 1/2