简算要过程4/7÷9+3/7×1/9 [1-(1/8+0.25)]÷5/12=?

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简算要过程4/7÷9+3/7×1/9[1-(1/8+0.25)]÷5/12=?简算要过程4/7÷9+3/7×1/9[1-(1/8+0.25)]÷5/12=?简算要过程4/7÷9+3/7×1/9[1-(

简算要过程4/7÷9+3/7×1/9 [1-(1/8+0.25)]÷5/12=?
简算要过程4/7÷9+3/7×1/9 [1-(1/8+0.25)]÷5/12=?

简算要过程4/7÷9+3/7×1/9 [1-(1/8+0.25)]÷5/12=?
4/7÷9+3/7×1/9
=4/7×1/9+3/7×1/9
=(4/7+3/7)×1/9
=1/9
[1-(1/8+0.25)]÷5/12
=【1-1/8-1/4】×12/5
=5/8×12/5
=3/2

4/7÷9+3/7×1/9
=(4/7+3/7)×1/9
=1×1/9
=1/9
[1-(1/8+0.25)]÷5/12
=[1-3/8]×12/5
=5/8×12/5
=1.5