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Earn +20 ptsQ: When can you clear fractions by multiplying through by the LCD?
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Definition of Multiplying by the least common denominator?
Ordinarily, one finds the least common denominator (LCD) of a set of common fractions in order to add or subtract the set of fractions. The LCD is the least common multiple (LCM) of the denominators of the set of fractions. Without knowing whatis to be multiplied by the LCD, and why, this question is ambiguous.
When is it useful to know multiples of a number?
When reducing fractions to their lowest terms or finding the LCD of fractions
How do you write fractions as equivalent fractions with the LCD?
(1) find the LCD. (2) find the factor that each original denominator needs to be multiplied by to get the LCD. (3) multiply both the numerator and the denominator by that factor.
Common denominator for each pair of fractions?
2/3 and 5/9The LCD is 9.
What is the least common denominator for 1 2 and 1 3?
The LCD for these two fractions is 6.
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