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5y+1/3+y-1/4=2-5y-5/12
人气:364 ℃ 时间:2020-06-20 08:27:43
解答
(5y+1)/3+(y-1)/4=2-(5y-5)/12
4(5y+1)+3(y-1)=24-(5y-5)
20y+4+3y-3=24-5y+5
28y=28
y=1
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