Solve the system of equations using Gauss-Jordan elimination. Practice writing all of the steps on your own paper: show all row operations and circle your pivots. State the final answer as a point. Fractions should be reduced but not written as mixed numbers. (Do not use decimal answers.) x + 2z = 2 y-30z = -18 x-2y+4z = 9 Give the final solution as a point.