Question

qual e o valor de A/3 - B/3 + 3ab/2 -3a/2b quando A = -1 e B =3?

Answer 1

$\frac{-1}{3} - \frac{3}{3} + \frac{3.-1.3}{2} - \frac{3.-1}{2.3} =$
$\frac{-1}{3} - \frac{3}{3} + \frac{-9}{2} - \frac{-3}{6} =$
$\frac{-2-6-27-(-3)}{6} =$
$\frac{-32}{6} = \frac{-16}{3}$