$\"\"$

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The equations are

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$\"\"$ Equation (1)

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$\"\"$ Equation (2)

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Multiply the equation (1) by 3.

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$\"\"$ Equation (3)

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Multiply the equation (2) by 4.

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$\"\"$ Equation (4)

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Eliminate the variable s by subtracting the Equation (3) from Equation (4)

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$\"\"$ (Subtract the corresponding columns) $\"\"$

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Apply division property of equality: if a = b, then $\"\"$ .

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Divide each side by negative 31.

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in equation (1).

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$\"\"$

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Product of two same sings is positive.

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$\"\"$

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Apply subtraction property of equality: if a = b, then $\"\"$ .

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$\"\"$ (Subtract 5 from 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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$\"\"$

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Apply division property of equality: if a = b, then $\"\"$ .

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

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$\"\"$

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$\"\"$

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

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The solution is $\"\"$ .