(1)(-2/3)—(-2/3)-(+3/4)

问题描述:

(1)(-2/3)—(-2/3)-(+3/4)
(2)16-(-8又1/3)-(+4又2/3)
(3)(-5.4)-(+6又13/20)-1又1/4
得数就可以!分数听你的

-3/4
19又2/3
-13.3