Question

11) 21/22 - 5/11) : 2/3
12) (3/4 - (1/2) во второй степени) : 7/8

Answer 1

$( \frac{21}{22} - \frac{5}{11} ) \div \frac{2}{3} = \frac{21 - 10}{22} \times \frac{3}{2} = \frac{11}{22} \times \frac{3}{2} = \frac{1}{2} \times \frac{3}{2} = \frac{3}{4}$

$( { \frac{3}{4} - \frac{1}{2} ) }^{2} \div \frac{7}{8} = { \frac{1}{4} }^{2} \times \frac{7}{8} = \frac{7}{128}$