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数学
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4.%=12/X+12怎么算?
人气:364 ℃ 时间:2020-05-22 23:17:28
解答
4.%=12/X+12
4.%*X=12+12*X
12*X-4%*X=-12
12*X-0.04*X=-12
11.96*X=-12
X=-12/11.96=-1又(0.04/11.96)=-1又(4/1196)=-1又(1/299)
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