八分之三加四分之一的和除以二分之一加五分之四能简便的要简便算

2025-04-05 16:04:50
推荐回答(1个)
回答1:

(3/8+1/4)➗1/2+4/5
=(3/8+1/4)x2+4/5
=3/8x2+1/4x2 +4/5
=(3/4+2/4)+4/5
=5/4+4/5
=2又1/20