а) \(\frac45:\frac43+\frac73\cdot\frac37-1:\frac{11}{8}=\frac35+1-\frac8{11}=\frac{48}{55}\)
б) \(\frac{13}{6}:\frac{13}{15}+\frac{23}{8}:\frac{23}{4}=\frac52+\frac12=3\)
в) \(\frac{57}{28}\cdot\frac{14}{57}-\frac23:\frac76\cdot\frac7{32}=\frac12-\frac18=\frac38\)
г) \(\left(\frac34+\frac43\right)\cdot\frac{48}{5}=\frac{25}{12}\cdot\frac{48}{5}=20\)
д) \(\left(\frac{135}{13}-\frac{205}{26}\right):\frac56=\frac52\cdot\frac65=3\)
е) \(\left(\frac{27}{8}-\frac34\right):\frac78=\frac{21}{8}\cdot\frac87=3\)
Ответ: а) \(\frac{48}{55}\); б) \(3\); в) \(\frac38\); г) \(20\); д) \(3\); е) \(3\).
