$\"\"$

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The expression is $\"\"$ .

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Distribute terms using distributive property: a(b + c) = ab + ac.

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$\"\"$

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$\"\"$ (Multiply: $\"\"$ )

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Distribute terms using distributive property: $\"\"$ .

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$\"\"$

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$\"\"$ (Cancel common terms)

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$\"\"$ (Product of two same signs is positive)

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$\"\"$

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Apply commutative property of addition: a + b = b + a.

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$\"\"$

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To add fractions the denominators must be equal.

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Find the least common denominator (LCD).

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Multiples of 1: 1,2,3,4,5,6,7.............

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Multiples of 2: 2,4,4,6,8,10,12............

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Multiples of 4: 4, 8, 12, 16, 20............

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The least common multiple of 1, 2 and 4 is 4.

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Rewrite each fraction with a common denominator of 4.

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$\"\"$

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$\"\"$

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$\"\"$ $\"\"$

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Rewrite fractions using the LCD 4.

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$\"\"$

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$\"\"$ (Lcm is 4)

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

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$\"\"$ (Add: 4n + 2n = 6n) $\"\"$

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The simplified expression of $\"\"$ $\"\"$ .