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负0.5减去<13\/4>加上2.75减去<15\/2>
回答:负二分之十七
(-0.5)-[(-13\/4)+2.75-(15\/2)]=
(-0.5)-[(-13\/4)+2.75-(15\/2)]=-0.5-(-3.25+2.75-7.5)=-0.5-(-0.5-7.5)=-0.5+0.5+7.5 =7.5
(-0.5)-(-4\/13)+2.75-(+2\/15)怎么解?
(-0.5)-(-4\/13)+2.75-(+2\/15)=-1\/2+4\/13+11\/4-2\/15=(-1\/2+11\/4)+4\/13-2\/15=9\/4+4\/13-2\/15=(9*13*15+4*4*15-2*4*13)\/(4*13*15)=(1755+240-104)\/780=1891\/780
第一题:0.5+(-1\/4)-(-2.75)+1\/2 求过程!!!
0.5+(-1\/4)-(-2.75)+1\/2 =0.5-1\/4+2.75+1\/2 =1\/2-1\/4+11\/4+1\/2 =2\/4-1\/4+11\/4+2\/4 =14\/4 =7\/2 (-2\/3)+(-1\/6)-(-1\/4)-1\/2 = -2\/3-1\/6+1\/4-1\/2 = -8\/12-2\/12+3\/12-6\/12 = -13\/12 ...
-(0.5-13\/4+(-2.75)-(-11\/2)
全部 化为分数来计算 (+0.5)+(-13\/4)+(-2.75)+(+11\/2)=(+1\/2)+(-13\/4)+(-11\/4)+(+11\/2)=1\/2-13\/4-11\/4+11\/2 =(1\/2+11\/2)-(13\/4+11\/4)=12\/2-24\/4 =6-6 =0 同学,如果我的回答帮到你了,请百忙中抽空采纳一下,谢谢!请尊重他人为了帮你解决问题付出...
负0.5减负三又四分之一加2.75减七又二分之一等于几? 要过程。。_百度知...
-0.5-(-2又1\/4)+2.75-7又1\/2 =-0.5+2.25+2.75-7.5 =-(0.5+7.5)+(2.25+2.75)=-8+5 =-3 例如:-0.5-(-3又1\/4)-(-2.75)-(+7又1\/2)=(-0.5-7又1\/2)+(3又1\/4+2.75)=-8+6 =-2
简便计算 :(-0.5)+(+31\/4)+(+2.75)+(+51\/2)
这个简单啊,把他们都化成小数。=-0.5+3.25+2.75+5.5 =(-0.5+5.5)+(3.25+2.75)=5+6 =11
-0.15-(+2.75)+13\/4+(-0.5)-(-11\/2)过程
2017-10-03 (-0.5)-[(-13\/4)+2.75-(15\/2)]= 1 2015-01-19 (-31\/4)+(-0.5)+13\/4+2.75+(-11\/... 2019-08-14 11\/4+(-2.75)一定要有过程 2014-11-15 计算:-(+0.5)-(-3又1\/4)+2.75-(+7又1... 44 2016-09-28 (-0.25)—(-4\/13)+2.75-(+2\/15) 更多...
2,负0.5减负3又4分之1加2.75减7又2分之1
=(1.25-2分之1)+(-4分之3加1又4分之3)=0.75+1 =1.75 5,负2又2分之1减负3又4分之3减1又4分之1加负1又2分之1减1又4分之1 =(-2又2分之1-1又2分之1)+3又4分之3-(1又4分之1+1又4分之1)=-4+3又3\/4-2又1\/2 =-1\/4-2又1\/2 =-2又3\/4 ...
13分之4加上26分之7的和减去52分之1,差是多少
4/13+7/26=8/26+7/26=26分之15,15/26-1/52=30/52-1/52=52分之29,答:差是 52分之29,