脱式计算 5/9 + 7/9 -1.625 -2.375+3

问题描述:

脱式计算 5/9 + 7/9 -1.625 -2.375+3

5/9 + 7/9 -1.625 -2.375+3
=12/9-(1.625+2.375)+3
=4/3-4+3
=1/3