Question

помогите из решить номер 295

Answer 1

$frac{a}{b} times c = frac{a times c}{b}$
$frac{7}{10} times 30 = frac{7 times 30}{10} = 21$
$frac{4}{15} times 50 = frac{4 times 50}{15} = frac{4 times 5}{3} = frac{20}{3} = 6 times frac{2}{3}$
$3 times frac{5}{12} = frac{3 times 5}{12} = frac{5}{4} = 1 times frac{1}{4}$
$c times frac{a}{b} = frac{ca}{b}$