The least common denominator is the least common multiple of the denominators of the fractions.
There are common fractions, improper fractions and equivalent fractions
You don't need a common denominator to divide fractions.
To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.
Just multiply the two denominators of your fractions, the answer you get is a common denominator.
you have to compare the common fractions
To subtract fractions with like denominators, subtract the numerators , and write the difference over the denominator. Example : Find 45−25 . Since the denominators are the same, subtract the numerators.
No only when adding or subtracting fractions a common denominator is needed
No, you only need a common denominator when adding or subtracting 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. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
by finding the common denominator of the fractions