问题标题:
(1-1/4)X-(1/4X-5)=20该怎么算?要写清楚过程.
问题描述:
(1-1/4)X-(1/4X-5)=20该怎么算?
要写清楚过程.
礼宾回答:
(1-1/4)X-(1/4X-5)=20
3/4x-1/4X+5=20
1/2x=20-5
x=15*2=30
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