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若方程3/5+3(x-1/2013)=4/5,则代数式7+30(x-1/2013)的值是_______.
人气:440 ℃ 时间:2019-10-29 17:32:18
解答
3/5+3(x-1/2013)=4/5
3(x-1/2013)=4/5-3/5
3(x-1/2013)=1/5
30(x-1/2013)=(1/5)*10=2
7+30(x-1/2013)
=7+2
=9
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