题目
-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
= =
= =
= = = =
= = = =
27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2
= =
= =
提问时间：2020-08-01
答案
-2.5+(-1/5) 0.4-(-1/4)+1/6 1/3-(-5/6)+2/3 1/3+(-1/5)+1+2/3
=-2.5-0.2 =13/20+1/6 =7/6+4/6 =2/15+1+10/15
=-2.7 =49/60 =11/6 =9/5
27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2
=27-18-7-32 =0.5-0.25+2.75+0.5
=-30 =3.5
=-2.5-0.2 =13/20+1/6 =7/6+4/6 =2/15+1+10/15
=-2.7 =49/60 =11/6 =9/5
27-18+(-7)-32 0.5+(-1/4)-(-2.75)+1/2
=27-18-7-32 =0.5-0.25+2.75+0.5
=-30 =3.5
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