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9.5 Addition, Subtraction, and Complex Fractions. (p. 562). Remember : When adding or subtracting fractions, you need a common denominator!. Examples:. Example:. ** Needs a common denominator 1 st ! Sometimes it helps to factor the denominators to make it easier to find your LCD.
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Remember: When adding or subtracting fractions, you need a common denominator!
Example: ** Needs a common denominator 1st! Sometimes it helps to factor the denominators to make it easier to find your LCD. LCD: 3x3(2x+1)
Example: LCD: (x+3)2(x-3)
Complex Fraction – a fraction with a fraction in the numerator and/or denominator. Such as: How would you simplify this complex fraction? Multiply the top by the reciprocal of the bottom!
Steps to make complex fractions easier. • Condense the numerator and denominator into one fraction each. (if necessary) • Multiply the numerator by the denominator. • Simplify the remaining fraction.