$\"\"$

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The equation is $\"\"$ .

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Find the $\"\"$ -value.

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$\"\"$ (Original equation)

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$\"\"$ (Cross product)

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$\"\"$ (Apply distributive property: $\"\"$ )

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

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

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$\"\"$ (Add $\"\"$ to each side)

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

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Therefore, the value of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .