Final answer:
To find the numerator of the simplified sum, multiply the numerators and multiply the denominators together.
Step-by-step explanation:
To find the numerator of the simplified sum, we need to multiply the numerators together and multiply the denominators together. In this case, the numerator of the first fraction is x and the numerator of the second fraction is 3. The denominator of the first fraction is x^2 + 3x + 2 and the denominator of the second fraction is x + 1. Therefore, the numerator of the simplified sum is x * 3 = 3x.