Question

Add and simplify if possible:

Answer 1

\[x+3 \over x-4 \] + \[x \over 4-x\]

Answer 2

oh this one is tricky
\[\frac{x}{4-x}=\frac{-x}{x-4}\]

Answer 3

so now
\[x+3-x=3\] and you get
\[\frac{3}{x-4}\]