Question

Вычислите: 4: 2\5- 1целая 1\14×7\15

Answer 1

⇒4*5/2-15/14*7/15⇒2*5-1/2⇒10-1/2⇒19/2

Answer 2

$4 \div \frac{2}{5} - 1 \times \frac{1}{14} \times \frac{7}{15}$
$\frac{4 \times 5}{2} - \frac{15 \times 7}{14 \times 15}$
$10 - \frac{1}{2} = 9 \frac{2}{2} - \frac{1}{2} = 9 \frac{1}{2} = 9.5$