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\frac{\left(3x-1\right)\left(p+1\right)}{\left(p-1\right)\left(p+1\right)}+\frac{\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of p-1 and p+1 is \left(p-1\right)\left(p+1\right). Multiply \frac{3x-1}{p-1} times \frac{p+1}{p+1}. Multiply \frac{-4+5x}{p+1} times \frac{p-1}{p-1}.
\frac{\left(3x-1\right)\left(p+1\right)+\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)}
Since \frac{\left(3x-1\right)\left(p+1\right)}{\left(p-1\right)\left(p+1\right)} and \frac{\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)} have the same denominator, add them by adding their numerators.
\frac{3xp+3x-p-1-4p+4+5xp-5x}{\left(p-1\right)\left(p+1\right)}
Do the multiplications in \left(3x-1\right)\left(p+1\right)+\left(-4+5x\right)\left(p-1\right).
\frac{8xp-2x-5p+3}{\left(p-1\right)\left(p+1\right)}
Combine like terms in 3xp+3x-p-1-4p+4+5xp-5x.
\frac{8xp-2x-5p+3}{p^{2}-1}
Expand \left(p-1\right)\left(p+1\right).
\frac{\left(3x-1\right)\left(p+1\right)}{\left(p-1\right)\left(p+1\right)}+\frac{\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of p-1 and p+1 is \left(p-1\right)\left(p+1\right). Multiply \frac{3x-1}{p-1} times \frac{p+1}{p+1}. Multiply \frac{-4+5x}{p+1} times \frac{p-1}{p-1}.
\frac{\left(3x-1\right)\left(p+1\right)+\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)}
Since \frac{\left(3x-1\right)\left(p+1\right)}{\left(p-1\right)\left(p+1\right)} and \frac{\left(-4+5x\right)\left(p-1\right)}{\left(p-1\right)\left(p+1\right)} have the same denominator, add them by adding their numerators.
\frac{3xp+3x-p-1-4p+4+5xp-5x}{\left(p-1\right)\left(p+1\right)}
Do the multiplications in \left(3x-1\right)\left(p+1\right)+\left(-4+5x\right)\left(p-1\right).
\frac{8xp-2x-5p+3}{\left(p-1\right)\left(p+1\right)}
Combine like terms in 3xp+3x-p-1-4p+4+5xp-5x.
\frac{8xp-2x-5p+3}{p^{2}-1}
Expand \left(p-1\right)\left(p+1\right).