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The system of equations are $\"\"$ , $\"\"$ , and $\"\"$ .

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Eliminate one variable by using two pairs of equations.

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Multiply the equation $\"\"$ by $\"\"$ .

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$\"\"$

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Subtract equation $\"\"$ from $\"\"$ .

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$\"\"$

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Multiply equation $\"\"$ by $\"\"$ .

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$\"\"$

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Subtract equation $\"\"$ from $\"\"$ .

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$\"\"$

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Solve the system of two equations $\"\"$ and $\"\"$ .

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Multiply equation $\"\"$ by $\"\"$ .

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$\"\"$

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Multiply equation $\"\"$ by negative $\"\"$ .

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$\"\"$

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Add the equations $\"\"$ and $\"\"$ .

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$\"\"$

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Solve for $\"\"$ .

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$\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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Substitute the two values into one of the original equations to find $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .