2.164. Найдите сумму: а) 1/6 + 5/8; б) 7/8 + 5/14; в) 7/10 + 3/25; г) 27/70 + 16/105; д) 11/18 + 1/81; е) 5/12 + 3/14; ж) 15/56 + 11/84; з) 11/21 + 3/49.

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Accepted Answer

а) \(\frac{1}{6}+\frac{5}{8}=\frac{4}{24}+\frac{15}{24}=\frac{19}{24}\).
б) \(\frac{7}{8}+\frac{5}{14}=\frac{49}{56}+\frac{20}{56}=\frac{69}{56}=1\frac{13}{56}\).
в) \(\frac{7}{10}+\frac{3}{25}=\frac{35}{50}+\frac{6}{50}=\frac{41}{50}\).
г) \(\frac{27}{70}+\frac{16}{105}=\frac{81}{210}+\frac{32}{210}=\frac{113}{210}\).
д) \(\frac{11}{18}+\frac{1}{81}=\frac{99}{162}+\frac{2}{162}=\frac{101}{162}\).
е) \(\frac{5}{12}+\frac{3}{14}=\frac{35}{84}+\frac{18}{84}=\frac{53}{84}\).
ж) \(\frac{15}{56}+\frac{11}{84}=\frac{45}{168}+\frac{22}{168}=\frac{67}{168}\).
з) \(\frac{11}{21}+\frac{3}{49}=\frac{77}{147}+\frac{9}{147}=\frac{86}{147}\).

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