Please explain how each answer is reached. Thank you so much!

Consider the following linear system. 11,, 3232 +3233 : 4 751:1 7 3232 +3933 : 8 23:1 W 6132 + 9123 : 14 (1)- Write the corresponding augmented matrix, denoted by A. % (2 )- Find an echelon form for the augmented matrix A. Remember to circle the pivot entries. Show each step of your elementary row operations. (3 )- Find the row reduced echelon form for the augmented matrix A. Remember to circle the pivot entries. Show each step of your elementary row operations. (4)- Write the solution in parametric vector form. Show your work. 1 76 1 2 Let al 2 2 , 82 = 5.0 and b = 5.0 . Determine if b is a linear combination of a1 and a2. Show all your work. 1 2 *1 1 *2 1 3 Find the inverse of the matrix A : 72 6 73 . Show each step of your elementary row operations. 4773