Question: Solve the given systems of equations using the rref feature on a calculator. x + y + z = 80 2x3y = -20 2x +

Solve the given systems of equations using the rref feature on a calculator.

x + y + z = 80 2x3y = -20 2x +

x + y + z = 80 2x3y = -20 2x + 3z = 115

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