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..25×3/4-(-25)×1/2+25÷(-4)
(-4)÷「1.25+(2-5/4)×8」
人气:134 ℃ 时间:2020-04-13 10:08:24
解答
25×3/4-(-25)×1/2+25÷(-4)
=25×3/4+25×1/2-25×1/4
=25×(3/4+1/2-1/4)
=25×1
=25
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