You need at least two denominators to find something in common between them.
24
one twelfth
30
30 just30
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.
three, because for one third three was the denominator , and for one sixth the denominator was devisable by three.
The LCD for 2/9 and 1/6 is 18.
You need to:* Find a common denominator (it need not be the least common denominator); * Convert both fractions to the common denominator * After that, you can simply subtract the numerators. * Check whether you can simplify the result.
A common denominator, though not the least, is 80.
one-sixth
The least common denominator of five sixths and one fourth is: 12.
A common denominator, though not the least one, is 180.