简算(1)20-1/4×2/5 5/6 (2) (7/16 4/5)÷3/5 (3

问题描述:

简算(1)20-1/4×2/5 5/6 (2) (7/16 4/5)÷3/5 (3

20-1/4×2/5 +5/6 =20-1/10+5/6=20+11/15=20又11/15 (7/16+ 4/5)÷3/5 =99/80÷‘3/5=33/16~如果你认可我的回答,请及时点击【采纳为满意回答】按钮~~手机提问者在客户端右上角评价点【满意】即可.~你的采纳是我前...