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

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The equations are $\"\"$ .

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$\"\"$ Equation (1)

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$\"\"$ Equation (2)

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Since the coefficient of x is same in both equations, either equation can be used for solution. Solve the second equation for x.

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$\"\"$

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$\"\"$

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According to addition property of equality: Add y 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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Substitute $\"\"$ in equation (1).

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$\"\"$

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

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According to subtraction property of equality: Subtract 8 from each side.

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$\"\"$

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$\"\"$ (Apply commutive property of addition: $\"\"$ )

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

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

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

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

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$\"\"$

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$\"\"$ (Product of two different signs is negative)

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

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The solution is $\"\"$ .