作业帮5.6*9/4+22/5*2.25
来源：学生作业帮助网 编辑：作业帮 时间：2024/06/04 16:04:05
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5.6*9/4+22/5*2.25
5.6*9/4+22/5*2.25
5.6*9/4+22/5*2.25
=(28/5)*(9/4)+(22/5)*(9/4)
=(28/5+22/5)*(9/4)
=(50/5)/(9/4)
=10*9/4
=90/4
=22.5
=5.6*(9/4)+(44/10)*(9/4)
=(5.6+4.4)*(9/4)
=90/4
=22.5