Pseudoinverse

The linear system given by:

$$A= \begin{pmatrix} 1 & 2 \\ 3 & 6 \\ \end{pmatrix} \qquad \mathbf{b}= \begin{pmatrix} 2 \\1 \\ \end{pmatrix}$$has no solution. Find the vector in $\operatorname{Im}(A)$ that is as closest to $\mathbf{b}$. Write its entries multiplied by 2, separated by a space.