6.66 Найдите значение выражения: a) 37-136+72 13 13 б) 210+40-5 9 в) 54+85 B 9 11 7 3 11 + 22' г) 610 + 210 1 д) +4 6 9 ; 10 e)

а) \[\frac{37}{13} - \frac{13}{13} + \frac{7}{2} = \frac{37}{13} - 1 + \frac{7}{2} = \frac{37 \cdot 2}{13 \cdot 2} - \frac{1 \cdot 26}{1 \cdot 26} + \frac{7 \cdot 13}{2 \cdot 13} = \frac{74 - 26 + 91}{26} = \frac{139}{26} = 5 \frac{9}{26}\]

б) \(2 \frac{2}{9} + 4 \frac{5}{6} - 5 \frac{4}{9} = \frac{20}{9} + \frac{29}{6} - \frac{49}{9} = \frac{20 \cdot 2}{9 \cdot 2} + \frac{29 \cdot 3}{6 \cdot 3} - \frac{49 \cdot 2}{9 \cdot 2} = \frac{40 + 87 - 98}{18} = \frac{29}{18} = 1 \frac{11}{18}\)

в) \(5 \frac{3}{11} + 8 \frac{5}{11} + \frac{3}{22} = \frac{58}{11} + \frac{93}{11} + \frac{3}{22} = \frac{58 \cdot 2}{11 \cdot 2} + \frac{93 \cdot 2}{11 \cdot 2} + \frac{3}{22} = \frac{116 + 186 + 3}{22} = \frac{305}{22} = 13 \frac{19}{22}\)

г) \(6 \frac{9}{10} + 2 \frac{7}{10} + 4 \frac{1}{10} = \frac{69}{10} + \frac{27}{10} + \frac{41}{10} = \frac{69 + 27 + 41}{10} = \frac{137}{10} = 13 \frac{7}{10}\)