Question

вычислите a/4 : 5 : а/10=?

Answer 1

Ответ:

$\frac{a}{4} \div \frac{5}{1} \div \frac{a}{10} = \frac{a}{4} \times \frac{1}{5} \div \frac{a}{10} = \frac{a}{20} \div \frac{a}{10} = \frac{a}{20} \times \frac{10}{a} = \frac{1}{2} \times \frac{1}{1} = \frac{1}{2} = 0.5$