8又5分之4÷[7.8+0.625×(4分之11-1.15)]
问题描述:
8又5分之4÷[7.8+0.625×(4分之11-1.15)]
答
8又5分之4÷[7.8+0.625×(4分之11-1.15)]
=8.8÷(7.8+0.625×1.6)
=8.8÷(7.8+1)
=8.8÷8.8
=1
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