3/5 plus 1/6 = 23/30
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the least common denominator of three fifths and two fifteenths and one sixth is 30. you multiply 15 by two, 6 by five, and 3 by ten.
Answer: Two fifths, one sixth, and then one third.
well three-sixth-two-sixth is one-sixth
one-sixth plus two-fifths is changed to 5/30 plus 12/30 because you must find the common denominator then add them. So the answer is 17/30 which is as low as it will go.2/5 + 1/6 = 12/30 + 5/30 = 17/30
Same as finding the LCM of 6, 5, 7: 2*3*5*7 = 210