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3) Use the backward substitution method to solve the system of equations. If the system is inconsistent, explain. If the system is consistent but

3) Use the backward substitution method to solve the system of equations. If the system is inconsistent, explain. If the system is consistent but has infinite solutions, write correct parametric equations. Make sure you label each step by showing the corresponding correct row operations in symbolic form as shown in class. 20x-10y-5z = 25 -8x+4y+2z=10 -x+3y+4z=-3

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