-5.25+2.2-｛-1.2-【-2分之1-（-0.75）】｝求大神帮助分部解如题_数学解答

-5.25+2.2-｛-1.2-【-2分之1-（-0.75）】｝求大神帮助
分部解如题

人气：435 ℃　时间：2020-06-19 02:11:52

解答

-5.25+2.2-｛-1.2-【-2分之1-（-0.75）】｝ =-5.25+2.2-｛-1.2-【-2分之1+0.75】｝ =-5.25+2.2-｛-1.2+2分之1-0.75｝ =-5.25+2.2+1.2-2分之1+0.75 =-5.25+2.2+1.2-0.5+0.75 =-5.25-0.5+0.75+2.2+1.2 =-5.75+0.75+2.2...