11/8+9/5x2/9+3/5简便计算

问题描述:

11/8+9/5x2/9+3/5简便计算

11/8+9/5x2/9+3/5
=11/8+2/5+3/5
=11/8+(2/5+3/5)
=11/8+1
=19/8
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