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0.5+(-4又1/4)-(+2.75)-(-6又1/2) 我要算式啊
人气:414 ℃ 时间:2020-09-25 08:59:07
解答
0.5+(-4又1/4)-(+2.75)-(-6又1/2)
=0.5+6又1/2-(4又1/4+2.75)
=7-7
=0
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