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Matrix equations: scalar multiplication

Solve for XX.
12X+[821357209]=[447238785]\dfrac{1}{2}X+\left[\begin{array}{rr}8 & 2 & 1 \\ 3 & 5 & 7 \\2 &0 &9\end{array}\right]=\left[\begin{array}{rr}4 & 4 & 7 \\ 2 & 3 & 8 \\7 &8 &5\end{array}\right]
X=X=