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.
Similar fractions are fractions with the same denominator. In order to add or subtract fractions they need to be similar.
Make the fractions equivalent then subtract
it stay the same when you subtract fractions and when you add fractions.
If the denominators are the same (which is what I understand by "similar fractions"), just subtract the numerators (the upper part).
multiply the fractions until they have common denominators and then subtract them
I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.
You need a common denominator in order to add or subtract fractions.
It means you have to subtract fractions.
You first convert them to similar fractions, i.e., to fractions that have the same denominator.* Step one: find a common denominator.* Step two: convert both fractions to equivalent fractions that have that denominator.