1.25×8/9+5/4*1/9

问题描述:

1.25×8/9+5/4*1/9

1.25×8/9+5/4×1/9=5/4(8/9+1/9)=5/4=1.25

1.25

1.25×8/9+5/4*1/9
=1.25×(8/9+1/9)
=1.25