4.5*15.6+4.5*3.4+4.5简算求回答!
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4.5*15.6+4.5*3.4+4.5简算求回答!
4.5*15.6+4.5*3.4+4.5简算
求回答!
4.5*15.6+4.5*3.4+4.5简算求回答!
4.5*15.6+4.5*3.4+4.5
=4.5×(15.6+3.4+1)
=4.5×20
=90