$\"\"$ $\"\"$

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The equations are

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$\"\"$ (equation 1)

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$\"\"$ (equation 2) $\"\"$

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Since $\"\"$ , substitute $\"\"$ for y in the second equation.

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$\"\"$ (equation 2)

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$\"\"$ (replace $\"\"$ )

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$\"\"$ (Distributive property: $\"\"$ )

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

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$\"\"$ (Commutative property: $\"\"$ ) $\"\"$

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

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$\"\"$ (Subtract 6 from each side)

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

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

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

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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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$\"\"$ (replace y by $\"\"$ )

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

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

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The solution is $\"\"$ .