Peggy would like to determine the minimum number of paper bags, x1, and plastic bags, x2, in order to contain 30 oranges and 26 apples. The paper bag can contain 4 oranges and 3 apples, and the plastic bag can contain 3 oranges and 4 apples. What are x1 and x2? Use the Gauss-Jordan elimination method to solve the linear
equations.