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

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The expression is $\"\"$ .

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$\"\"$ (Distributive property: a(b + c) = ab + ac)

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

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$\"\"$ (Distributive property: $\"\"$ )

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

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$\"\"$

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$\"\"$ (Commutative property of addition: a + b = b + a)

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$\"\"$ (Distributive property: ab + ac = a(b + c))

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Find the least common denominator (LCD).

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Multiples of 3: 3,6,9,12,15.....

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

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The least common multiple of 3 and 4 is 12.

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Rewrite each fraction with a common denominator of 12.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ (Lcm is 12)

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$\"\"$ (Add: 20 + 18 = 38)

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

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$\"\"$ (Simplify)

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$\"\"$

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The simplified expression is $\"\"$ .