A. Adding and Subtracting Rational Expressions
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A. Adding and Subtracting Rational Expressions
Warm Up |
Adding and Subtracting Fractions
The key to adding and subtracting fractions is finding the lowest common denominator (LCD). Once you determine the LCD, you will write equivalent fractions with equal denominators (the LCD). Then, you can add or subtract the numerators, while the denominator remains unchanged. Finally, simplify, if possible, by writing the resulting expression in lowest terms.