(Solved): Please do all of these steps in MATLAB. Thank you! (Use format rat) Let \( A=\left[\begin{array}{ ...

Please do all of these steps in MATLAB. Thank you!

(Use format rat) Let \( A=\left[\begin{array}{lll}7 & 9 & 8 \\ 5 & 6 & 8 \\ 5 & 6 & 6\end{array}\right] \) (a) Follow the instructions in the introduction on how to enter the augmented matrix \( \left[\begin{array}{ll}A & I_{3}\end{array}\right] \), put it in reduced row echelon form, and then extract the inverse matrix \( A^{-1} \). (b) Now let MATLAB compute the inverse of \( A \) directly using the inv command. Make sure your answer coincides with the previous part.