You keep them the same if they have different bases
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you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..
Fractional exponents follow the same rules as integral exponents. Integral exponents are numbers raised to an integer power.
Addition and subtraction are inverse functions.
nothing, keep the exponents the same, remember you can only add or subtract when the exponents are the same
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