﹙1/4-0.1÷2﹚×5/13+1÷1又1/12 计算

问题描述:

﹙1/4-0.1÷2﹚×5/13+1÷1又1/12 计算

﹙1/4-0.1÷2﹚×5/13+1÷1又1/12
=(5/20-1/20)×5/13+1÷13/12
=1/13+12/13
=1