5/9+(3/4—1/2)怎么计算

问题描述:

5/9+(3/4—1/2)怎么计算

5/9+(3/4—1/2)
=5/9+(3/4-2/4)
=5/9+(3/4—1/2)
=5/9+1/4
=20/36+9/36
=29/36