Partial or whole?

Algebra Level 2

2x+1(x+1)(x3)(x+4)=A(x+1) +B(x3) +C(x+4)\dfrac{2x+1}{(x+1)(x-3)(x+4)} = \dfrac{A}{(x+1)}\ + \dfrac{B}{(x-3)}\ + \dfrac{C}{(x+4)}

The above rational fraction is expressed in the form of partial fractions. Evaluate A+B+CA + B + C.

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