Question

5. Помогите даю 50 баллов ​

Answer 1

Ответ:

Объяснение:

$(\frac{1}{4} )^{-2} -(-\frac{3}{8} )^{0}+(\frac{2}{3})^{3}:\frac{7}{9} \\\\4^{2} -1+\frac{8}{27} * \frac{9}{7} \\\\ 16-1+\frac{8}{3} * \frac{1}{7} \\\\\15+\frac{8}{21}\\ \\ \frac{323}{21} = 15\frac{8}{21}$

Answer 2

Ответ:

15 8/21

Объяснение:

1) (2/3)³ : 7/9 = 8/27 * 9/7 = 8/3 * 1/7 = 8/21

2) (1/4)-² - (-3/8)⁰ = (-4)² - 1 = 16 - 1 = 15

3) 15 + 8/21 = 15 8/21