Consider the following system of linear equations. 4x - 12y = 8 8x - 29y = 6 Solve the system by completing the steps below to produce a reduced row-echelon form. R, and R, denote the first and second rows, respectively. The arrow notation (-) means the expression/matrix on the left becomes the expression/matrix on the right once the row operations are performed. (a) Enter the augmented matrix. X 5 ? (b) For each step beloks, enter the coefficient for the row operation and the missing entries in the resulting matrix. Step 1