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有没有计算3.162-(-2)-(+305)-(-3)-(+504)-(+0.162)
3.162-(-2)-(+3½)-(-3)-(+5¼)-(+0.162)
人气:281 ℃ 时间:2020-06-03 15:22:26
解答
=3.162+2-3.5+3-5.25-0.162
=(3.162-0.162)+(2+3)-(3.5+5.25)
=3+5-8.75
=-0.75
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