(18分之11-9分之5+4分之1)*72(怎样简便怎样算)
问题描述:
(18分之11-9分之5+4分之1)*72(怎样简便怎样算)
答
(11/18 - 5/9 + 1/4) *72
= 11/18*72 - 5/9*72 + 1/4*72
= 11*4-5*8+18
= 44-40+18
= 22