Question

Simplify (2-¹÷5+2)×(⅞)-¹​

Answer 1

Answer:

$simplify : \\ ( {2}^{ - 1} \div 5 + 2) \times (\frac{7}{8} {)}^{ - 1} \\ = ( \frac{1}{2} \times \frac{1}{5} + 2) \times \frac{8}{7} \\ = ( \frac{1}{10} + 2) \times \frac{8}{7} \\ = ( \frac{1 + 20}{10} ) \times \frac{8}{7} \\ = \frac{21}{10} \times \frac{8}{7} \\ = \frac{3 \times 4}{5} \\ = \frac{12}{5}$