$\"\"$

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The equations are

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$\"\"$

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$\"\"$

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$\"\"$

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Since the coefficients of the x-terms +4 and +4 are same,

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you can eliminate these terms by subtracting the equations. \ \

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Subtract the equations to eliminate variable x.

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$\"\"$ (Write the equations in column form and add)

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$\"\"$

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$\"\"$ (Divide each side by negative 12) \ \

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$\"\"$ (Cancel common terms) \ \

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$\"\"$

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Now Substitute $\"\"$ for y in either equation to find the value of x.

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$\"\"$ (Equation 1)

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$\"\"$ (Multiply: $\"\"$ ) \ \

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$\"\"$ (Add 9 to each side)

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Additive indentity property: $\"\"$ )

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$\"\"$ (Add: $\"\"$ )

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$\"\"$ (Divide each side by 4) \ \

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ ) \ \

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The solution is $\"\"$ . $\"\"$

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The solution is $\"\"$ .