$\"\"$

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The system of equations are $\"\"$ and $\"\"$ .

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$\"\"$ Equation (1)

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$\"\"$ Equation (2)

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Solve the first equation for x.

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Apply subtraction property of equality: Subtract 12y from each side.

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$\"\"$

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Apply additive identity property: $\"\"$ ) $\"\"$

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Apply division property of equality: Divide each side by 4.

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$\"\"$

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$\"\"$ (Cancel common terms)

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$\"\"$

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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

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$\"\"$ (Subtract: $\"\"$ ) $\"\"$

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$\"\"$ (Divide each side by 5)

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$\"\"$

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

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Now, find the x value by substituting $\"\"$ in $\"\"$ .

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$\"\"$

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

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$\"\"$

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The system of solution is $\"\"$ .