3,5+(1/3)³ × [2/3 × 5 - (11/23)°] -2 × (3/5)⁻¹

3,5+(1/3)³ × [2/3 × 5 - (11/23)°] -2 × (3/5)⁻¹= =3,5+1/27x[10/3-1]-2x[5/3]= =3,5+1/27x7/3-10/3= =3i1/2+1/27-10/3= =3i27/54+2/54-180/54= =3i29/54-3i18/54= =11/54