$\"\"$

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Original equation.

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$\"\"$

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Multiply the matrix by 2

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$\"\"$

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$\"\"$ (Multiply each element by 2)

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$\"\"$ (Simplify) $\"\"$

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Add the matrix

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$\"\"$

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$\"\"$ (Add the corresponding elements)

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$\"\"$ (Simplify)

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$\"\"$ (Equate corresponding elements) $\"\"$

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Solve the equation.

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Apply subtraction property of equality:If a = b then a $\"\"$ c = b $\"\"$ c.

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$\"\"$ (Subtract 10 from each side)

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

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$\"\"$ (Divide each side by 2)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Cancel common signs) $\"\"$

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