Given the matrix 3 3 390 03 -1 1 1-3 5 -2 -19 -3 -1 -4 -2 -1 -17 Use elementary row operations to carry it to a matrix that is a) In reduced row-echelon form:

Perform the indicated row operations on the given augmented matrix. -1 -3 6-2 -2 1-3-2 3-5 0 4 a.) Interchange row 3 and row 1 3 OT -2 -1 -1 b.) Multiply row 3 by 5 -2 -5 15 1 -3 -3 1 -25 0 -3 6 6 -3 0 4 -2 -2 -2 -2 c.) Multiply row 1 by -5 and add to row 3 20

) Let 3 -3 -5 -8 -1 B = 3 -4 -3 2 (a) Find the reduced row echelon form of the matrix B. rref(B) : (b) How many pivot columns does B have?

Determine reduced row echleon form with steps