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**Unformatted text preview: **get a common denominator, we have to multiply both the numerator and the denominator by the same amount so that we don’t unbalance our formula. Then, once we have common denominators, we add or subtract just like above and then simplify if possible. 1. 4 3 2 1 + 2. y x y x x 2 2 6 3 + + + 3. 14 7 63 7 10 7 25 2 2 + + + + +-x x x x x 4. 4 4 4 + +-x x x Math 1300 Section 5.3 3 5. 12 5 8 7-6. 6 2 3 2 1 +-x 7. 5 5 5 +--x x x 8. x x-+-2 3 4 Math 1300 Section 5.3 4 Perform the given operation. Be sure to factor the answer if possible. Write the answer in lowest terms. 1. 10 1 5 7 + 2. 1 3 5 8 1 3 7 + + + + x x x x 3. z x z z x y + + + 3 4 4. y y y y 3 1 5 1 5 2 + + + + Math 1300 Section 5.3 5 5. a x x a 4 5 3 9-6. 1 4 6 2 6 5 7-----d d d d...

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