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Simplify the expression: 6/c+4/c^2

I know for the answer the denominator would be c^2, but what is the numerator? I always get confused with this. Thanks!

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  1. 6 / c + 4 / c² =

    6 ∙ c / c ∙ c + 4 / c² =

    6 ∙ c / c² + 4 / c² =

    ( 6 c + 4 ) / c² =

    2 ∙ ( 3 c + 2 ) / c²

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