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数学
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60分之30+6x=2分之一(x+40)怎么写
人气:373 ℃ 时间:2020-04-11 02:55:58
解答
1/2+6X=1/2(X+40)
1/2+6X=X/2+20
11x/2=39/2
x=39/11
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