5/9+(3/4-1/2)=?用递等式计算(写过程)
问题描述:
5/9+(3/4-1/2)=?用递等式计算(写过程)
答
=9/5+5/4
=61/20
答
5/9+(3/4-1/2)
=5/9+(3/4-2/4)
=5/9+1/4
=20/36+9/36
=29/36