Answer
\[
M=
\left[ {\begin{array}{cc}
4 & 18 \\
4 & 0 \\
2 & 2 \\
\end{array} } \right]
\]
Work Step by Step
\[
M=
\left[ {\begin{array}{cc}
2*1/2+3* 1 & 3*2+3*4 \\
4 & 3-3 \\
2 & 2 \\
\end{array} } \right]
\]