Solve this following

Question:

If $\overrightarrow{\mathrm{AB}}=(2 \hat{\mathrm{i}}+\hat{\mathrm{j}}-3 \hat{\mathrm{k}})$ and $\mathrm{A}(1,2,-1)$ is the given point, find the coordinates of $\mathrm{B}$.

Solution:

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