Question 1940
what you have done is slightly wrong...good try though :-)

correct version is...

{{{(x-1)/((x-4)(x+3)) + (x+4)/((x+3)(x+2))}}}

i am not sure what is the aim with this question, so i shall just mess around with it and you take what you need...

i am going to add these 2 together, as fractions:

{{{((x-1)(x+2) + (x+4)(x-4))/((x+3)(x+2)(x-4))}}}

to be honest, that is all i can really do with this...it is now one entity at least.

jon