一个数加5,再乘以2,然后再减去4,再除以2,最后得6,问这个数是多少
一个数加5,再乘以2,然后再减去4,再除以2,最后得6,问这个数是多少
数学人气:112 ℃时间:2020-04-16 06:16:56
优质解答
((x+5)*2-4)/2=6 x=3
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