$\"\"$

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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 x in the second equation.

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$\"\"$ (Equation 2)

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$\"\"$ (Replace $\"\"$ )

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

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Apply addition property of equality: Add 1 to 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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$\"\"$ (Add: $\"\"$ )

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

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

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Now Substitute 1 for x in either equation to find the value of y.

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$\"\"$ (Equation 1)

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$\"\"$ (Replace x by 1)

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

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

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

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The solution is $\"\"$ .