Question

Помогите решить СРОЧНО
А)5/6–5/12
Б)2/5*3⅓
В)4-3⅜
Г)21:3/7

Answer 1

А)
$\frac{5}{6} - \frac{5}{12} = \frac{10}{12} - \frac{5}{12} = \frac{5}{12}$
Б)
$\frac{2}{5} \times 3 \frac{1}{3} = \frac{2}{5} \times \frac{10}{3} = \frac{4}{3} = 1 \frac{1}{3}$
В)
$4 - 3 \frac{3}{8} = \frac{32}{8} - \frac{27}{8} = \frac{5}{8}$
Г)
$21 \div \frac{3}{7} = \frac{21}{1} \times \frac{7}{3} = \frac{49}{1} = 49$

Answer 2

А)10/12-5/12=5/12
Б)2/5*10/3=6/15*50/15=300/15=20
В)4/4–27/8=8/8-27/8=-19/8
Г)21*7/3=49