Question

помогите решить пожалуйста 1ч остался срочно даю 70 балов

Answer 1

Ответ:

Пошаговое объяснение:

№1

1) 7 5/9 * 2 1/4 = 68/9 * 9/4 = 17/1 * 1/1 = 17/1 = 17

2) 2 1/4 * 3 2/3 = 9/4 * 11/3 = 3/4 * 11/1 = 33/4

3) 17 - 33/4 = 17/1 - 33/4 = 68/4 - 33/4 = 35/4 = 8 3/4

№2

1) 6 5/8 * 4 = 53/8 * 4 = 53/2 * 1/1 = 53/2 = 26 1/2

2) 4 * 3 2/3 = 4 * 11/3 = 4/1 * 11/3 = 44/3 = 14 2/3

3)  26 1/2 - 14 2/3 = 53/2 - 44/3 = 159/6 - 88/6 = 71/6 = 11 5/6

№3

1) 1/14 + 2/21 = 3/42 + 4/42 = 7/42 = 1/6

2) 5 1/2 - 2 1/14 = 11/2 - 29/14 = 77/14 - 29/14 = 48/14 = 24/7

3) 1/6 * 24/7 = 1/1 * 4/7 = 4/7

№4

1) 2 11/12 * 6 = 35/12 * 6 = 35/2 * 1/1 = 35/2 = 17 1/2

2) 7/48 * 8 = 7/6 * 1/1 = 7/6

3) 17 1/2 + 7/6 = 35/2 + 7/6 = 105/6 + 7/6 = 112/6 = 56/3 = 18 2/3