$\"\"$

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The given expression is $\"\"$ .

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The LCD is $\"\"$ is $\"\"$ .

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$\"\"$ (Write $\"\"$ using the LCD)

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$\"\"$ (Multiply)

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$\"\"$ (The common denominator is $\"\"$ ) $\"\"$ (Distributive property: $\"\"$ ) $\"\"$

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$\"\"$ (Apply commutative property of addition: $\"\"$ ) $\"\"$ (Add: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Take out common factor) $\"\"$

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The sum is $\"\"$ .