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Factor $3x+3y$ by the greatest common divisor $3$
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$\frac{1}{3\left(x+y\right)}+\frac{1}{9x+9y}$
Learn how to solve simplification of algebraic expressions problems step by step online. Simplify the expression 1/(3x+3y)+1/(9x+9y). Factor 3x+3y by the greatest common divisor 3. Factor 9x+9y by the greatest common divisor 9. The least common multiple (LCM) of a sum of algebraic fractions consists of the product of the common factors with the greatest exponent, and the uncommon factors. Obtained the least common multiple (LCM), we place it as the denominator of each fraction, and in the numerator of each fraction we add the factors that we need to complete.