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add and simplify and show work 7 3 --- + --- x+6 x²+6x
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numerators- top of the fraction can only be added if the denominators are the same
\[\dfrac{7}{x+6} + \dfrac{3}{x^2 + 6x} = \dfrac{7x}{x(x+6)} + \dfrac{3}{x^2 + 6x} \\ = \dfrac{7x+3}{x^2 + 6x}\]
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