Ответ:
- \( -\frac34-\left(-\frac56\right)=-\frac34+\frac56=\frac{-9+10}{12}=\frac1{12}\).
- \(25-32=-7\).
- \(3\frac56-4\frac38=\frac{23}{6}-\frac{35}{8}=\frac{92-105}{24}=-\frac{13}{24}\).
- \(-3-\frac49=-\frac{27}{9}-\frac49=-\frac{31}{9}=-3\frac49\).
- \(-5.5-2.8=-8.3\).
- \(-7\frac89-\left(-9\frac16\right)=-7\frac89+9\frac16=\frac{55}{6}-\frac{71}{9}=\frac{165-142}{18}=\frac{23}{18}=1\frac5{18}\).
Ответ: а) \(\frac1{12}\); б) \(-7\); в) \(-\frac{13}{24}\); г) \(-3\frac49\); д) \(-8,3\); е) \(1\frac5{18}\).
