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Algebra 7 Online
OpenStudy (anonymous):

Simplify the expression below. 6n2-5n2+7n2

OpenStudy (johnweldon1993):

Well when you are adding (subtracting) numbers with the same variable and exponents (as you are) you add or subtract the numbers....and leave the variables and exponents alone so all you worry about is 6 - 5 + 7 = ...?

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