(11/12-2/9)-1/3等于多少简便计算？

Question

如题所述

Answer 1

=11/12-2/9-3/9
=11/12-5/9
=39/108

Answer 2

其实没有简算的方法。1=36/36－就是通分

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(33－8－12)/36=13/36

Answer 3

（11/12-2/9）-1/3
=11/12-4/12-2/9
=7/12-2/9
=63/108-24/108
=39/108
=1/2