$\"\"$

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The equations are

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$\"\"$

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$\"\"$

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$\"\"$

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Since the coefficients of the y-terms,+6and +6,are same,

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you can eliminate these terms by subtracting the equations. .

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Subtract the equations to eliminate variable y.

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$\"\"$ (Write the equations in column form and add)

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$\"\"$

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$\"\"$ (Divide each side by 6)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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Now Substitute $\"\"$ for x in either equation to find the value of y.

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$\"\"$ (Equation 1)

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

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$\"\"$ (Subtract 20 from each side)

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$\"\"$ (Commutative property: a+b=b+a)

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

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

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$\"\"$ (Divide each side by 6)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ )

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

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The solution is $\"\"$ .

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