Question

НАПИШИТЕ ПОЛНОЕ РЕШЕНИЕ И ПОДРОБНО

Answer 1

$0.42 - \frac{0.42 - 0.57}{(15 + 3) \times \frac{0.04 \times 15}{0.42 + 0.3} } = 0.42 - \frac{ - 0.15}{18 \times \frac{0.6}{0.72} } = \\ = 0.42 + \frac{0.15}{25 \times 0.6} = 0.42 + \frac{15}{25 \times 6 \times 10} = 0.42 + \frac{1}{100} = \\ = 0.42 + 0.01 = 0.43$