math-calculus

(4)/(x-3)+(2)/(3-x)

(4)/(x-3) + (2)/(-1)(-3+x)
i factor out a negative 1 from 3-x.

4/(x-3)+ 2/(x-3)

6/x-3

it suppose to be 2/x-3 how i get that?

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  1. But when you "factor out" the -1, it has to go somewhere, you can't just drop it , so ...

    (4)/(x-3) + (2)/(-1)(-3+x)
    = 4/(x-3) - 2/(-3+x)
    = 2/(x-3)

    remember what I showed you yesterday?
    2/-1 = -2/1 = -(2/1)

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  2. thanks very much reiny :)

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