IA_GPS_26 - Step 2: Add or subtract the numerators and...

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R0907 a.s. http://faculty.valencia.cc.fl.us/ashaw INTERMEDIATE ALGEBRA GPS # 26 6.3 ADDITION AND SUBTRACTION OF RATIONAL EXPRESSIONS NAME: Useful Guidelines: [ a , b , and c are nonzero real number.] To add or subtract rational expressions: * If the denominators are the same, add or subtract the numerators and place the result over the common denominator: c b a c b c a + = + or c b a c b c a ! = ! . * If the denominators are different, then Step 1: Write the rational expressions with the least common denominator (LCM),
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Unformatted text preview: Step 2: Add or subtract the numerators and place the result over the common denominator. * Finally, check that the answer is in lowest terms. Evaluate the following: 1. a) 2 3 1 2 x x ! b) 4 7 3 1 2 2 k k k k + + ! + + 2. a) 3 1 2 2 m m ! ! + b) 16 2 2 16 2 3 2 2 ! + ! ! ! c b c a 3. a) 5 2 25 3 2 ! + ! z z z z b) 2 5 2 2 4 3 2 ! ! ! + ! y y y y y 4. 2 2 2 4 3 2 3 1 x x x x x x + + + + +...
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