(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 10:49:29
![(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)](/uploads/image/z/60389-53-9.jpg?t=%281%E5%8F%884%2F5-2%E5%8F%885%2F6%2B3%E5%8F%887%2F10-4%E5%8F%888%2F15%29%2F%28-1%2F30%29)
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(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
(1又24/30-2又25/30+3又21/30-4又16/30)*(-30)
=(1-2+3-4)又(24/30-25/30+21/30-16/30)*(-30)
=(-2)又(4/30)*(-30)
=8