Work is provided in the image attached.
It's not entirely clear to me what you're trying to solve, but it looks like the initial equation is

First convert each term into a fraction with the same (i.e. the least common) denominator. The first term needs to be multiplied by <em>a</em> + 2; the second term by (<em>a</em> + 3) (<em>a</em> + 2); and the third term by <em>a</em> + 3 :

Now that everything has the same denominator, we can combine the fractions into one. Move every term to one side and join the numerators:

Simplify the numerator:

If neither <em>a</em> = -3 nor <em>a</em> = -2, we can ignore the denominator:

Solve for <em>a</em> :

Slope = 1
7
4
I don’t know the other but I had the first 3 on a test