To add or subtract expressions, expand them to make their denominators the same. Least common multiple of $3x-1$ and $3-2x$ is $\left(3x-1\right)\left(-2x+3\right)$. Multiply $\frac{x+2}{3x-1}$ times $\frac{-2x+3}{-2x+3}$. Multiply $\frac{x+1}{3-2x}$ times $\frac{3x-1}{3x-1}$.
Since $\frac{\left(x+2\right)\left(-2x+3\right)}{\left(3x-1\right)\left(-2x+3\right)}$ and $\frac{\left(x+1\right)\left(3x-1\right)}{\left(3x-1\right)\left(-2x+3\right)}$ have the same denominator, add them by adding their numerators.
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of $\left(3x-1\right)\left(-2x+3\right)$ and $\left(2x-3\right)\left(3x-1\right)$ is $\left(2x-3\right)\left(3x-1\right)$. Multiply $\frac{x^{2}+x+5}{\left(3x-1\right)\left(-2x+3\right)}$ times $\frac{-1}{-1}$.
Since $\frac{-\left(x^{2}+x+5\right)}{\left(2x-3\right)\left(3x-1\right)}$ and $\frac{4x^{2}+6x+3}{\left(2x-3\right)\left(3x-1\right)}$ have the same denominator, add them by adding their numerators.
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of $3x-1$ and $3-2x$ is $\left(3x-1\right)\left(-2x+3\right)$. Multiply $\frac{x+2}{3x-1}$ times $\frac{-2x+3}{-2x+3}$. Multiply $\frac{x+1}{3-2x}$ times $\frac{3x-1}{3x-1}$.
Since $\frac{\left(x+2\right)\left(-2x+3\right)}{\left(3x-1\right)\left(-2x+3\right)}$ and $\frac{\left(x+1\right)\left(3x-1\right)}{\left(3x-1\right)\left(-2x+3\right)}$ have the same denominator, add them by adding their numerators.
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of $\left(3x-1\right)\left(-2x+3\right)$ and $\left(2x-3\right)\left(3x-1\right)$ is $\left(2x-3\right)\left(3x-1\right)$. Multiply $\frac{x^{2}+x+5}{\left(3x-1\right)\left(-2x+3\right)}$ times $\frac{-1}{-1}$.
Since $\frac{-\left(x^{2}+x+5\right)}{\left(2x-3\right)\left(3x-1\right)}$ and $\frac{4x^{2}+6x+3}{\left(2x-3\right)\left(3x-1\right)}$ have the same denominator, add them by adding their numerators.