Question

Найдите значение выр-ий

1) 60 * (1/4-1/5+1/3)

2)8^3*6^7/24^5

Answer 1

$60 \times ( \frac{1}{4} - \frac{1}{5} + \frac{1}{ 3}) = 60 \times ( \frac{15 - 12 + 20}{60} ) = 60 \times \frac{23}{60} = 23$
$8 {}^{3} \times \frac{6 {}^{7} }{24 {}^{5} } = 8 {}^{3} \times \frac{6 {}^{7} }{6 {}^{5} \times 4 {}^{5} } = 8 {}^{3} \times \frac{6 {}^{2} }{4 {}^{5} } = \frac{4 {}^{3} \times 2 {}^{3} \times 6 {}^{2} }{4 {}^{5} } = \frac{8 \times 36}{16} = 18$