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To find the common denominator of two fractions, you find the least common multiple of the denominators. The multiply the numerators by whatever you multiplied the denominator by to get an equivalent fraction.
example:
1 + 2 = 10
3 4 12
the least common multiple of 3 and 4 is 12 so,
4 + 6 = 10
12 12 12 which can be reduced to the answer of 5
6
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Continue Learning about Math & Arithmetic
How do you subtract fractions when denominator is different?
By finding the lowest common denominator of the fractions.
What is the rule of adding and subtracting different denominator?
Find the lowest common denominator by finding the lowest common multiple of the denominators
How do you add a dissimilar fraction?
By finding their lowest common denominator
How do you subtract fractions with unequal denominators?
by finding the common denominator of the fractions
How do you subtract mixed factions?
By finding their lowest common denominator and then alter the numerator and denominator of the given fractions accordingly
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