Yes, 'fractions' with different numerators can be added, but not with different denominators. In the case where you have different denominators, you must find the LCM (lowest common multiple).
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just find a common denominator and add the two numerators together then add the whole numbers
No. Convert them to like denominators and add the numerators.
Numerators
Similar fractions occurs when the denominator or the bottom numbers are the same. In this case, adding similar fractions requires you to add the numerators; the top numbers together, and to keep the denominator the same. An example would be to add 2/8 and 5/8 equals 7/8.
You add or subtract only the numerators