Номер 937 938 решите пж. Дам лучший ответ и спасибо!

Question 1

Question 2

937.
а) $(\frac{1}{2}:\frac{3}{4}-\frac{4}{9}):\frac{3}{5}$ = $(\frac{1}{2}*\frac{4}{3}-\frac{4}{9})*\frac{5}{3}$ = $(\frac{2}{3}-\frac{4}{9})*\frac{5}{3}$ = $(\frac{6}{9}-\frac{4}{9})*\frac{5}{3}$ = $\frac{2}{9}*\frac{5}{3}$ = $\frac{10}{27};$
б) $\frac{1}{2}:\frac{3}{8}-\frac{4}{9}:\frac{3}{5}$ = $\frac{1}{2}*\frac{8}{3}-\frac{4}{9}*\frac{5}{3}$ = $\frac{4}{3}-\frac{20}{27}$ = $\frac{36}{27}-\frac{20}{27}$ = $\frac{16}{27};$
в) $\frac{3}{5}:(\frac{9}{10}-\frac{3}{5}*\frac{8}{9})$ = $\frac{3}{5}:(\frac{9}{10}-\frac{1}{5}*\frac{8}{3})$ = $\frac{3}{5}:(\frac{9}{10}-\frac{8}{15})$ = $\frac{3}{5}:(\frac{27}{30}-\frac{16}{30})$ = $\frac{3}{5}:\frac{11}{30}$ = $\frac{3}{5}*\frac{30}{11}$ = $\frac{3}{1}*\frac{6}{11}$ = $\frac{18}{11}$ = $1\frac{7}{11};$
г) $\frac{3}{5}:\frac{9}{10}-\frac{3}{5}*\frac{8}{9}$ = $\frac{3}{5}*\frac{10}{9}-\frac{3}{5}*\frac{8}{9}$ = $\frac{3}{5}(\frac{10}{9}-\frac{8}{9})$ = $\frac{3}{5}*\frac{2}{9}$ = $\frac{1}{5}*\frac{2}{3}$ = $\frac{2}{15}.$

938.
а) $4*\frac{1}{5}+4*\frac{3}{7}-4*\frac{1}{35}$ = $4(\frac{1}{5}+\frac{3}{7}-\frac{1}{35})$ = $4(\frac{7}{35}+\frac{15}{35}-\frac{1}{35})$ = $4*\frac{21}{35}$ = $4*\frac{21:7}{35:7}$ = $4*\frac{3}{5}$ = $\frac{12}{5}$ = $2\frac{2}{5};$
б) $\frac{3}{8}*5+\frac{5}{56}-\frac{1}{7}:\frac{1}{5}$ = $\frac{3}{8}*5+\frac{5}{56}-\frac{1}{7}*5$ = $5(\frac{3}{8}-\frac{1}{7})+\frac{5}{56}$ = $5(\frac{21}{56}-\frac{8}{56})+\frac{5}{56}$ = $5*\frac{13}{56}+\frac{5}{56}$ = $\frac{65}{56}+\frac{5}{56}$ = $\frac{70}{56}$ = $1\frac{14}{56}$ = $1\frac{1}{4};$
в) $\frac{3}{2}*\frac{5}{6}+\frac{3}{2}:\frac{9}{10}-\frac{3}{2}*\frac{13}{18}$ = $\frac{3}{2}*\frac{5}{6}+\frac{3}{2}*\frac{10}{9}-\frac{3}{2}*\frac{13}{18}$ = $\frac{3}{2}(\frac{5}{6}+\frac{10}{9}-\frac{13}{18})$ = $\frac{3}{2}(\frac{15}{18}+\frac{20}{18}-\frac{13}{18})$ = $\frac{3}{2}*\frac{22}{18}$ = $\frac{3}{1}*\frac{11}{18}$ = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B1%7D%2A%5Cfrac%7B11%7D%7B6%7D" id="TexFormula50" title="\frac{1}{1}*\frac{11}{6}" alt="\frac{1}{1}*\frac{11}

Question 3

чтоор?