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解(5又九分之五-0.8+2又九分之四)×(7.6÷五分之四+2又五分之四×1.25).
人气:288 ℃ 时间:2019-08-21 15:42:03
解答
(5又九分之五-0.8+2又九分之四)×(7.6÷五分之四+2又五分之四×1.25)
=(5又九分之五+2又九分之四-0.8)×(7.6x5/4+2.8×5/4)
=(8-0.8)x5/4x(7.6+2.8)
=7.2x5/4x10.4
=9x10.4
=93.6
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