1/11+10/11×(0.1+0.01)=1/11+10/11*0.11=1/11+1/10=(10+11)/110=21/110
分数计算1/11+10/11×(0.1+0.01)=1/11+10/11×0.11=1/11+10/11x11/100=1/11+1/10=10/110+11/110=21/11