(-1/4)+5/6+2/3-1/2
问题描述:
(-1/4)+5/6+2/3-1/2
答
3/2
答
答案3/2
答
(-1/4)+5/6+2/3-1/2
=5/6+4/6-1/4-2/4
=3/2-3/4
=3/4