Fractions with the same numerator are called like fractions
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Only if the numerator is zero,
The smaller fraction has the smaller numerator.
They are called like fractions.In order to add or subtract fractions you will usually need to convert them to like fractions. Then you simply add or subtract the numerators (as required) to form the numerator of the answer. The same (or common) denominator is the denominator of the answer. You may need to simplify the resulting fraction.
A unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n.
if they have the same denominator just subtract it . if it doesn't than find the denominator.