计算:(1又4⼀5)-5⼀6+7⼀10-8⼀15)乘(-30)

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2025-01-01 01:18:34
推荐回答(2个)
回答1:

(9/5-5/6+7/10-8/15)x(-30)
=-54+25-21+16
=-34

回答2:

(9/5-5/6+7/10-8/15)×(-30)
=(54-25+21-16)/30×(-30)
=34