如题所述
第1个回答 2018-10-18
1÷13x100-9/13-91x1/13
=100/13-9/13-91/13
=91/13-91/13
=0本回答被网友采纳
=100/13-9/13-91/13
=91/13-91/13
=0本回答被网友采纳
第2个回答 2018-10-18
1÷13x100-9/13-91x1/13
=1*1/13x100-9/13-91x1/13
=1/13*(100-9-91)=o
=1*1/13x100-9/13-91x1/13
=1/13*(100-9-91)=o
