Question

-(2/3)*3+1calcule isso

Answer 1

$-( \frac{2}{3} ).3+1 \\ -( \frac{2}{3} ). (\frac{3}{1}) +1 -\\ ( \frac{6}{3} )+1$
$2+1 = 3$

Answer 2

-(2;3) x 3 + 1
2/3 x 3/1 +1/1   
6/3 + 1/1 =      mmc entre 3 e 1 = 3
6/3 + 3/3 =
9/3  simplificando por 3 =
3/1 = 3