你好简便计算过程如下66×23+22×31=22×3×23+22×31=22×69+22×31=22×(69+31)=22×100=2200望采纳
=22×3×23+22×31=22×69+22×31=(69+31)×22=100×22=2200
原式=22×3×23+22×31=22×69+22×31=22×(69+31)=22×100=2200