Chapter 4.7, Problem 26E

In Problems $21\text{-}26$, find ${\left(I-M\right)}^{-1}$ and $X$.

$M=\left[\begin{array}{ccc}0.3& 0.2& 0.3\\ 0.1& 0.1& 0.1\\ 0.1& 0.2& 0.1\end{array}\right];D=\left[\begin{array}{c}10\\ 25\\ 15\end{array}\right]$