Question

Отинем комектесиниздерши 673 674

Answer 1

$4 \frac{1}{5} \div \frac{1}{2} = \frac{21}{5} \times 2 = \frac{42}{5} = 8 \frac{2}{5} \\ p = 2 \times 4 \frac{1}{5} + 2 \times 8 \frac{2}{5} = 2 \times \frac{21}{5} + 2 \times \frac{42}{5} = \frac{42}{5} + \frac{84}{5} = \frac{42 + 84}{5} = \frac{126}{5} = 25 \frac{1}{5}$