$\"\"$

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

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Equation 1: $\"\"$

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Equation 2: $\"\"$ .

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Solve the first equation for c since the coefficient is 1.

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Equation 1: $\"\"$

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Add $\"\"$ to each side.

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$\"\"$

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$\"\"$ .

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$\"\"$

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The value of $\"\"$ substitute in the second equation, $\"\"$ .

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$\"\"$

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Apply distributive property: $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Subtract 4 from each side

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$\"\"$

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$\"\"$

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Divide each side by 11.

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$\"\"$

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$\"\"$

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$\"\"$

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The value of $\"\"$ substitute in the either equation to find c.

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Equation 1: $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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

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The solution is $\"\"$ .