\(\dfrac{5x-1}{x-2}+\dfrac{3x-1}{x+3}=\dfrac{\left(5x-1\right)\left(x+3\right)}{\left(x-2\right)\left(x+3\right)}+\dfrac{\left(3x-1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)}\)
\(=\dfrac{5x^2+14x-3}{\left(x-2\right)\left(x+3\right)}+\dfrac{3x^2-7x+2}{\left(x-2\right)\left(x+3\right)}=\dfrac{8x^2+7x-1}{\left(x-2\right)\left(x+3\right)}\)