Order the steps to simplify:
`\frac{1}{\left(x-2\right)\left(x+3\right)}+\frac{3}{x+3}`
1. Find a common denominator for the fractions: (x-2)(x+3)
2. Rewrite the fractions with the common denominator:
\frac{1}{\left(x-2\right)\left(x+3\right)} + \frac{3(x-2)}{(x-2)(x+3)}
3. Combine the fractions:
\frac{1 + 3(x-2)}{(x-2)(x+3)}
4. Simplify the numerator:
1 + 3x - 6 = 3x - 5
5. Put the simplified numerator over the common denominator:
\boxed{\frac{3x-5}{\left(x-2\right)\left(x+3\right)}}