Question

4/5×(-3/5)-1/8×2/3+1/13×2/5​

Answer 1

Answer:

$\frac{4}{5} \times \frac{ - 3}{7} - \frac{1}{8} \times \frac{2}{3} \times \frac{1}{13} \times \frac{2}{3} \\ = \frac{ - 12}{35} - \frac{2}{24} \times \frac{2}{39} \\ = \frac{ - 1}{35} - 1 \times \frac{2}{39} \\ = \frac{ - 1}{35} - \frac{2}{39} \\ = \frac{ - 1365 - 1365}{1365} \\ = \frac{- 2730}{1365} \\ = - 2$