(3/8)+(4/9))*8*9怎样简便计算
问题描述:
(3/8)+(4/9))*8*9怎样简便计算
一定要简便计算哦!
答
[(3/8)+(4/9)]*8*9
=[(3/8)*8*9]+[(4/9)*9*8]
=(3*9)+(4*8)
=27+32
=59