You don't. You find a common denominator and compare after that.
Because when you compare fractions with the same denominators, you do not have to find the least common denominator (LCM or LCD).
unlike denominators: the bottom number of a fraction. to have unlike denominators you must have two fractions with a different number on the bottom of each fraction.
Unlike. Unlike. Unlike. Unlike.
unlike fractions
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.
Multiply them by each other.
You can convert them to equivalent fractions with like denominators, then simply compare the numerators.You might also convert each fraction to a decimal (divide the numerator by the denominator); then you can also compare them.
unlike fractions
you make them have like denominators by multiplying so many times that they have the same denominators or you can make them have like denominators by multiplying the two
Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.
The definition is a different denominator in a fraction
the fractions have different denominators