(1)(+1/2)+(-1/2)+(-6/7)(2)0.5+(-1/4)+0.75+(+1/2)(3)1/4+(+5又3/5)+(-0.25)+(-3又1/8) (4)-1.5+1.75+(-3.75)+(-1.5) 快速回,要准确的答案和算是啊~
问题描述:
(1)(+1/2)+(-1/2)+(-6/7)(2)0.5+(-1/4)+0.75+(+1/2)(3)1/4+(+5又3/5)+(-0.25)+(-3又1/8) (4)-1.5+1.75+(-3.75)+(-1.5) 快速回,要准确的答案和算是啊~
答