Вопрос:

43. Вычислите: \(-\frac{6}{5}+\frac{12}{35}\cdot1\frac{13}{15}+5:7\frac{1}{2}\).

Ответ:

\(1\frac{13}{15}=\frac{28}{15}\), \(7\frac{1}{2}=\frac{15}{2}\).

\(\frac{12}{35}\cdot\frac{28}{15}=\frac{16}{25}\), а \(5:\frac{15}{2}=5\cdot\frac{2}{15}=\frac{2}{3}\).

\(-\frac{6}{5}+\frac{16}{25}+\frac{2}{3}=\frac{-90+48+50}{75}=\frac{8}{75}\).

Ответ: \(\frac{8}{75}\).