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x+x÷2+x÷3+x÷4=25这个方程怎么算
人气:418 ℃ 时间:2020-02-03 12:59:53
解答
方程两边同时乘以1,2,3,4的最小公倍数12
即:12x+6x+4x+3x=300
25x=300
x=12
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