-1-（-12分之5）-(-8分之7）-（-4分之3）等于多少

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原式=-1+5/12+7/8+3/4
=-24/则悉纳24+10/24+21/陆乱24+18/24
=25/24
K.O.啦孙没

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-1-（-5/巧枝嫌搭悉12)-(-7/8)-(-3/4)

=-1+5/12+(7/8+3/4)
=-1+5/12+13/8
=-1+49/24
=25/孝手24

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