Răspuns:
-2,(3)+1=-1,(3)
1/3-(-1)=[tex]\frac{1}{3} + \frac{3}{3} =\frac{4}{3}[/tex]
-2,(3)+1 =
= -(23-2)/9+1=-21/9+1=-7/3+1 = (-7+3)/3=-4/3
si 1/3-(-1) = 1/3+1=(1+3)/3=4/3
