the least common denominator would be 15. 1/5 would be 3/15 and 2/15 would stay the same..2/15. you take the denominator and multiply it by what to get 15........????........ answer: 3. so you also would multiply the numinator by 3 then take the second one. you multiply the denominator by 1 to get 15 so you do the same with thge numerator. the common denominator is 15 but to get them to fractions with the same denominators you would do that.
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To add one fifteenth (1/15) and one fifth (1/5), first convert one fifth to have a common denominator of 15. One fifth is equivalent to three fifteenths (3/15). Therefore, 1/15 + 3/15 equals 4/15.
The LCD of 0.9 (9/10) and 1/45 is 90.
The common denominator of three fourths and one fifth is twenty. The fractions including the common denominator can look like this: 3/4 to 15/20 and 1/5 to 4/20. Hope this helps!! ^^
8/15
One-third is the same as five-fifteenths. Two-fifths is the same as six-fifteenths. Five-fifteenths plus six-fifteenths is eleven-fifteenths. One, or fifteen-fifteenths, minus eleven-fifteenths is four-fifteenths.