How do u solve (f-g)(x) when f(x)=4x/7 +7 and g(x)=-6/x

Question

Ok so its (f-g)(x)=4x/7 +7 - (-6/x)
But how do u simplify it from there?

Thanks!

Answer 1

4x/7 + 7 + 6/x

That looks simple enough to me, but some folks like to have a single rational function:

multiply to get everything over a common denominator of 7x:

(4x^2 + 49x + 42)/7x