Question

Пожалуйста решите это срочно надо кто нибудь

Answer 1

1) $frac{5}{9}+1 frac{5}{7}*(4 frac{2}{3}-2 frac{5}{8}):1 frac{3}{4}=frac{5}{9}+frac{12}{7}*(frac{14}{3}-frac{21}{8})*frac{4}{7}=$$=frac{5}{9}+frac{12}{7}*frac{14*8-21*3}{24}*frac{4}{7}=frac{5}{9}+frac{12*49*4}{7*24*7}=frac{5}{9}+2=2frac{5}{9}=frac{23}{9}$

2) $2-3frac{1}{7}*(2-1frac{9}{11})*frac{21}{8}=2-frac{22}{7}*(frac{22}{11}-frac{20}{11})*frac{21}{8}=$$2-frac{22*2*21}{7*11*8}=2-frac{3}{2}=frac{4}{2}-frac{3}{2}=frac{1}{2}=0,5$

3) $frac{7}{3}+frac{41}{10}:(frac{37}{15}-frac{5}{12})*frac{5}{6}=frac{7}{3}+frac{41}{10}:(frac{37*4}{60}-frac{5*5}{60})*frac{5}{6}=$$frac{7}{3}+frac{41}{10}:frac{123}{60}*frac{5}{6}=frac{7}{3}+frac{41*60*5}{10*123*6}=frac{7}{3}+frac{5}{3}=4$

4) $4frac{5}{12}-1frac{1}{12}:(2frac{1}{6}+frac{8}{15})*frac{14}{15}=frac{53}{12}-frac{13}{12}:(frac{13}{6}+frac{8}{15})*frac{14}{15}=$$frac{53}{12}-frac{13}{12}:frac{13*5+8*2}{30}*frac{14}{15}=frac{53}{12}-frac{13*30*14}{12*81*15}=frac{53}{3*4}-frac{13*7}{3*81}=frac{53*81}{3*4*81}-frac{13*7*4}{3*81*4}$$=frac{4293-364}{972}=frac{3929}{972}=4frac{41}{972}$