Subtraction of Fractions
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Fractions with the same denominator are subtracted by subtracting the numerators and placing the difference over the common denominator. After subtracting, write the fraction in simplest form.
Subtracting Fractions with Unlike Denominators
To subtract fractions with unlike denominators, first rewrite the fractions as equivalent fractions with a common denominator. As with adding fractions, the common denominators is the Least Common Multiple of the denominators.