x减5⼀12等于3⼀8怎么验算

2025-12-25 11:31:33
推荐回答(1个)
回答1:

x-5/12=3/8
x=3/8+5/12
x=9/24+10/24
x=19/24

把x=19/24代入x-5/12=3/8
的:
19/24-5/12
=19/24-10/24
=9/24
=3/8
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