(-60)÷(3/4+5/6-7/12+11/15)=?
人气:182 ℃ 时间:2020-04-06 05:44:53
解答
(-60)÷(3/4+5/6-7/12+11/15)=?
=(-60)÷(45/60+50/60-35/60+44/60)
=(-60)÷(104/60)
=(-60)×(60/104)
=-3600/104
=-450/13
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