使分母相同或便于通分的加数结合在一起
追答(+1又2分之1)-(+5)+(-3分之1)-(+4分之1)+(-5又3分之2)
=(1-5-5)+(1/2-1/4-1/3-2/3)
= -9 + ( 2/4-1/4-4/4)
= -9 -3/4
= 负9又4分之3
使分母相同或便于通分的加数结合在一起
(+1又2分之1)-(+5)+(-3分之1)-(+4分之1)+(-5又3分之2)
(+1又2分之1)-(+5)+(-3分之1)-(+4分之1)+(-5又3分之2)=1+1\/2 -5 -1\/3 - 1\/4 - 5 - 2\/3 =(1-5-5)+(1\/2-1\/3-1\/4-2\/3)= -9 +(6-4-3-8)\/12 = 负9又3\/4
1又2分之1 -(负5)+(负3分之1)-(+4分之1)+(负5又3分之2)
如图~
有理数加减混合运算(+1\/2)-(+5)+(-1\/3)-(+1\/4)+(+5又2\/3)(使分母相同...
(+1\/2)-(+5)+(-1\/3)-(+1\/4)+(+5又2\/3)=1\/2-5-1\/3-1\/4+17\/3 =2\/4-1\/4-1\/3+17\/3 =1\/4+16\/3 =3\/12+64\/12 =67\/12
(-2又3\/5)+(-1\/4)+(-3又2\/5+(+2又3\/4)+(-1又1\/2)+1又1\/3
您好:(-2又3\/5)+(-1\/4)+(-3又2\/5+(+2又3\/4)+(-1又1\/2)+1又1\/3 =(2又3\/4-1\/4)-1又1\/2-(2又3\/5+3又2\/5)+1又1\/3 =2又1\/2-1又1\/2+1又1\/3-6 =1+1又1\/3-6 =2又1\/3-6 =-3又2\/3 如果本题有什么不明白可以追问,如果满意请点击右下角“采纳为满...
一又二分之一-(+5)+(-三分之一)-(+四分之一)+(-五又三分之二) 写成省...
一又二分之一-(+5)+(-三分之一)-(+四分之一)+(-五又三分之二)=一又二分之一-四分之一-三分之一-五又三分之二-5 =-1又3\/4-6-5 =-12又3\/4
(正二分之一)-(+5)+(负三分之一)-(正四分之一)+(正五又三分之二)
(正二分之一)-(+5)+(负三分之一)-(正四分之一)+(正五又三分之二)=1\/2-5-1\/3-1\/4+5+2\/3 =(1\/2-1\/4)+(2\/3-1\/3)=1\/4+1\/3 =3\/12+4\/12 =7\/12
2\/1+(-3\/2)+5\/4+(-2\/1)+(-3\/1)
等于-5分之1。2\/1+(-3\/2)+5\/4+(-2\/1)+(-3\/1)= 1\/2 - 2\/3 + 4\/5 - 1\/2 -1\/3= 1\/2 - 1\/2 + 4\/5 -1\/3- 2\/3= (1\/2 - 1\/2) + 4\/5 -(1\/3+ 2\/3)= 4\/5 -1= -5分之1。分数混合运算与整数混合运算的顺序一样,先算乘除,后算加减,有括号的就先算...
(-3分之1)+(+5分之2)+(+5分之3)+(-1又3分之2)=
原式=(-1\/3)+2\/5+3\/5-5\/3=(2\/5+3\/5)+【(-1\/3)-5\/3】=1-2=-1
(-3分之1)+(+5分之2)+(+5分之3)+(-1又3分之2)怎么做(过程)
原式=(-1\/3-1又2\/3)+(2\/5+3\/5)=-2+1 =-1
...2又3\/5)+(+3又1\/4)+(-3又2\/5)+(+2又3\/4)+(-1又1\/2)+(-1又1\/...
(-2又3\/5)+(+3又1\/4)+(-3又2\/5)+(+2又3\/4)+(-1又1\/2)+(-1又1\/3)=(3又1\/4+2又3\/4)-(2又3\/5+3又2\/5)-1又1\/2-1又1\/3 =6-6-1又3\/6-1又2\/6 =-2又5\/6