Ответ:
а) \((\frac9{16}-\frac1{16})+\frac56=\frac12+\frac56=\frac43\).
б) \(\frac5{18}+(\frac{11}{27}-\frac2{27})=\frac5{18}+\frac13=\frac{11}{18}\).
а) \((\frac9{16}-\frac1{16})+\frac56=\frac12+\frac56=\frac43\).
б) \(\frac5{18}+(\frac{11}{27}-\frac2{27})=\frac5{18}+\frac13=\frac{11}{18}\).