Find the sum of the vectors

$\displaystyle \vec{{u}}=-\hat{{i}}+\hat{{j}}+{2}\hat{{k}}$ and $\displaystyle \vec{{v}}=-{2}\hat{{i}}+{2}\hat{{j}}-\hat{{k}}$.

$\displaystyle \vec{{u}}+\vec{{v}}=$ $\displaystyle \hat{{i}}+$ $\displaystyle \hat{{j}}+$ $\displaystyle \hat{{k}}$