Question

жду ответа на вопрос ​

Answer 1

Пошаговое объяснение:

№3

1) 16 1/3 * 3/7z = 49/3 * 3/7z = 7/1 * 1/1z = 7/1z = 7z

2) 2 3/4 : 0,6875 = 2,75 : 0,6875 = 4

3) 4 * (2z + 1) = 8z + 4

4) 7z + 10 - (8z + 4) + z = 7z + 10 - 8z - 4 + z =

(7z - 8z + z) + (10 - 4) = 0 + 6 = 6

№4

1) 16,2 * 5/27 = 162/10 * 5/27 = 6/2 * 1/1 = 6/2 = 3

2) 3 * (a - 2b) = 3a - 6b

3) 25 2/3 : 3 5/24 = 77/3 : 77/24 = 77/3 * 24/77 = 1/1 * 8/1 = 8/1 = 8

4) 8 * (a + b) = 8a + 8b

5) 3a - 6b - (8a + 8b) + 14b + 5a + 4 =

3a - 6b - 8a - 8b + 14b + 5a + 4 =

(3a - 8a + 5a) + (-6b - 8b + 14b) + 4 =

0 + 0 + 4 = 4