-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3 27-18+_数学解答

-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3 27-18+(-7)-32 0.5+(-1/4)-(2.75)+1/2

人气：343 ℃　时间：2020-03-28 14:43:04

解答

-2.5+(-1/5) =-2.5-0.2=-2.70.4-(-1/4)+1/6 =2/5+1/4+1/6=24/60+15/60+10/60=49/601/3-(-5/6)+2/3 =(1/3+2/3)-(-5/6)=1+5/6=11/61/3+(-1/5)+1+2/3 =(1/3+2/3)+(1-1/5)=1+4/5=9/527-18+(-7)-32 =27-(18+7+32)=27-47=-...