Question

3*(-1//3)^2-5*(-1//3)*(-1//2)+3*(-1//3)//2*(-1//3)*(-1//3)-(-1//3)^2*-1//2)

Answer 1

3*(-1/3)²-5*(-1/3)*(-1/2)+3*(-1/3)/2*(-1/3)*(-1/3)-((-1/3)²-1/2)=
=3*1/9+5/3*(-1/2)-(3/3)/2*1/9-(1/9-1/2)=1/3-5/6-9/2-(2/18-9/18)=
=2/6-5/6-4 3/6-(-7/18)=5+7/18=5 7/18