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Finding least common multiples is useful in combining algebraic fractions. The procedure is analogous to that used to combine ordinary fractions in arithmetic. To combine two or more fractions, the denominators must be the same; the most direct way to produce common denominators is simply to multiply all the denominators together. For example a/b+c/d=ad/bd+cd/bd But bd may not be the least common denominator. For example But 18 is only one possible common denominator; the least common denominator is 6, and |