Question

4-1\2+1\3

Answer 1

1. Division goes first, so $1/2=0.5$ and $1/3=0.333...$ or $0.(3)$ , thus we have $4-0.5+0.(3)$.
2. Then we should do the sum: $4-0.5+0.(3)=3.5+0.(3)=3.8(3)$.