VTMO 2016 — Grade 4 — semifinal Question 3

Question 3

The teacher writes $\frac23$ and $\frac32$. Nam multiplies them, Hung adds them, and Trung subtracts Nam’s result from Hung’s. What is Trung’s result?

$\frac15$
$\frac76$
$0$
$\frac85$
$\frac56$