Question

Можно в сокращение, пожалуйста

Answer 1

Ответ ниже..............

Answer 2

б)

$\frac{2}{7} + \frac{1}{3} = \frac{6+7}{21} = \frac{13}{21}$

е)

$\frac{11}{12} - \frac{2}{3} = \frac{11 - 8}{12} = \frac{3}{12} = \frac{1}{4} = 0,25$

в)

$\frac{5}{7} * \frac{14}{19} = \frac{5}{1} * \frac{2}{19} = \frac{10}{19}$

ж)

$\frac{4}{9} : \frac{2}{1} = \frac{4}{9} * \frac{1}{2} = \frac{2}{9}$

б)

$\frac{2}{7} * \frac{1}{3} = \frac{2}{21}$

е)

$\frac{11}{12} : \frac{2}{3} = \frac{11}{12} * \frac{3}{2} = \frac{11}{4} * \frac{1}{2} = \frac{11}{8}$

в)

$\frac{3}{4} + \frac{5}{12} = \frac{9+5}{12} = \frac{14}{12} = \frac{7}{6}$

ж)

$\frac{2}{3} - \frac{5}{9} = \frac{6-5}{9} = \frac{1}{9}$