发布时间：2019-08-01 04:42:37
去年收小麦和玉米共
5/8x2+1/4
=5/4+1/4
=3/2 吨
5/8×2+1/4=6/4=3/2=1.5吨
5/8+1/4+5/8
=5/8+5/8+1/4
=3/2吨
2×（5/8）+1/4=3/2吨