(-3/5)+(-2/5)=?(+1/5)+(-4/5)=?(-3/8)-1/2=?1/6-(-2/3 )=?(+21/
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(-3/5)+(-2/5)=?(+1/5)+(-4/5)=?(-3/8)-1/2=?1/6-(-2/3 )=?(+21/5)+(-4/5)=?0.5+(-3/4)+(5.25)+(1/2)
(+21/5)+(-4/5)=?的意思是正二又五分之一减负五分之四的和是多少.
(+21/5)+(-4/5)=?的意思是正二又五分之一减负五分之四的和是多少.
![(-3/5)+(-2/5)=?(+1/5)+(-4/5)=?(-3/8)-1/2=?1/6-(-2/3 )=?(+21/](/uploads/image/z/19482182-62-2.jpg?t=%28-3%2F5%29%2B%28-2%2F5%29%3D%3F%28%2B1%2F5%29%2B%28-4%2F5%29%3D%3F%28-3%2F8%29-1%2F2%3D%3F1%2F6-%28-2%2F3+%29%3D%3F%28%2B21%2F)
(-3/5)+(-2/5)=-1
(+1/5)+(-4/5)=-3/5
(-3/8)-1/2=-7/8
1/6-(-2/3)=5/6
(+21/5)+(-4/5)=17/5
0.5+(-3/4)=1/2+(-3/4)=-1/4
(5.25)+(1/2)=21/4+(1/2)=23/4
(+1/5)+(-4/5)=-3/5
(-3/8)-1/2=-7/8
1/6-(-2/3)=5/6
(+21/5)+(-4/5)=17/5
0.5+(-3/4)=1/2+(-3/4)=-1/4
(5.25)+(1/2)=21/4+(1/2)=23/4
1-57×21/25= 1/2+5/4×4/5= 1/6×(5-2/3)= 7/8×7+3/8=
2*1=2 3*1=3 4*1=4 5*1=5 2*2=4 3*2=6 4*2=8 5*2=9 2*3=6 3*3=9
5/6+8/1-12/5=?3+5x=6 x+2/1*5/4=2/1
数学题 假如1=5 ,2=6 ,3=7 ,4=8 ,5=?
1=5 2=6 3=8 4=7 5=?
1+2+3+4+5+6=
1+2-3+4-5+6=
1 2 3 4 5 6 7 8=1
10/21+(3/20+11/21)= 3/18+5/8-2/18= 7/15-1/5= 2/3-1/3+1/6= 1-
若果1=5,2=6,3=7,4=8,5等于几?
1=5 2=14 3=21 4=56 5=多少?
1+2=3 4+5=?