$$1/2 + 2/3$$
Here the LCM of $$2$$ and $$3$$ is $$6$$
$$= \left (1 \times 3 \right )/ \left (2 \times 3 \right ) + \left (2 \times 2 \right )/ \left (3 \times 2 \right )$$
By further calculation
$$= 3/6 + 4/6$$
= $$\left (3 + 4 \right )/6$$
So we get
$$= 7/6$$
$$= 1 \dfrac{1}{6}$$