Resposta:
Explicação passo a passo:
[(-5/3)^-1 + (5/2)^-1]^-1=
[-3/5+2/5]^-1=
[-1/5]^-1=
-5
[3^-1-(-3)^-1]^-1=
[1/3-(-1/3)]^-1=
[1/3+1/3]^-1=
[2/3]^-1=
3/2
6.(2/3)^2 +4.(-3/2)^-2=
6.4/9 + 4.(-2/3)^2=
24/9 +4.4/9=
24/9+16/9=
40/9
