Question

Задание 47 и 48
Срочноо!!

Answer 1

Ответ:

47.

3/7 + 8 2/3 - 2/21

3/7 + 26/3 - 2/21

ОТВЕТ 9!

48.

2/3 + 6 3/7 - 2/21

2/3 + 45/7 - 2/21

ОТВЕТ 7!

/-дробь

Answer 2

$\frac{3}{7} + \frac{26}{3} - \frac{2}{21} = \frac{9 + 182 - 2}{21} = \frac{189}{21} =9 \\ \\ \frac{2}{3} +6 \frac{3}{7} - \frac{2}{21} = \frac{2}{3} + \frac{45}{7} - \frac{2}{21} = \frac{14 + 135 - 2}{21} = \frac{147}{21} = 7$