Question 7 solve the following system of equations by using the elimination method. -4x – 2y = -12 4x + 8y = -24 (5, 3) (-6, -6) (3, 1) (6, -6)

To solve this problem you must apply the proccedure shown below:

1. You have the following system of equation:

2. As you can see, you can cancel out the variable , because it has equal coefficient with different signs at both equations. Then, if you add both equations, you obtain:

3. Let's substitute the value obtained into the second equation to calculate the other variable:

The answer is: (6,-6).

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