3,4题怎么做,5题对吗,有好评.
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3,4题怎么做,5题对吗,有好评.
3,4题怎么做,5题对吗,有好评.
3,4题怎么做,5题对吗,有好评.
3.8x/5=(1/2+3/2)=2,x=5/4.
4.(1+25%)x=10,5x/4=10,x=8
5.对