You find a common denominator
1/2 + 1/3... need a common denominator. 6 would work and it is the smallest number that does so it is the least common denominator or LCD.
12, 24 etc also work.
Let's use 6
multiply the top and bottom of 1/2, known as numerator and denominator, by 3. We multiply by 3 because we want 6 in the bottom of denominator and 2x3=6. But since we multiply the bottom by 3 we must do it to the top too. We have 3/6 = 1/2 Now it is important to know that we are multiplying 1/2 by 3/3 and 3/3 is 1. Multiply by 1 does not change anything. That is why we are allowed to do this
Do the same thing with 1/3 but multiply by 2/2 and we have 2/6 now we are adding 2/6 and 3/6 which is 5/6
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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 or dissimilar fraction.
denmitor
Like fractions have the same denominators (bottom part of fraction), unlike fractions do not.
The simplest way is to convert them to like fractions, or percentages.