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(-5)×(+7又1/3)+7×(-7又1/3)-(+12)×5(-7又1/5)简便方法计算==求!
题目详情
(-5)×(+7又1/3)+7×(-7又1/3)-(+12)×5(-7又1/5)
简便方法计算= =求!
简便方法计算= =求!
▼优质解答
答案和解析
原式=(-7又1/3)×(5+7-60)
=(-22/3)×(-48)
=352
=(-22/3)×(-48)
=352
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