4.28*6-4.28-4.28*5用简便方法怎么算

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4.28*6-4.28-4.28*5用简便方法怎么算4.28*6-4.28-4.28*5用简便方法怎么算4.28*6-4.28-4.28*5用简便方法怎么算4.28×6-4.28-4.28×5=4.2

4.28*6-4.28-4.28*5用简便方法怎么算
4.28*6-4.28-4.28*5用简便方法怎么算

4.28*6-4.28-4.28*5用简便方法怎么算
4.28×6-4.28-4.28×5
=4.28×(6-1-5)
=4.28×0
=0