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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 Summary

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

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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 ...

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