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    Use Substitution and Elimination to Solve the Linear Equation.

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    Please solve the following system of equations using both of these methods (solve once using substitution and once using elimination):

    -4x+9y=-71; 3x-y=13 and -2x+3y=9; -4x+6y=18

    Also, can you show you work so I can understand. Thank you.

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    Solution Preview

    Methods of substitution:
    -4x+9y=-71 (I)
    3x-y=13 (II)

    From (II), y=3x-13 (III), plug into (I):
    Plug x=2 into (III):
    Therefore, the solution ...

    Solution Summary

    The solution provides detailed explanation how to use substitution and elimination to solve linear equations.