To "rationalize the denominator" is another way to say, getting rid of that pesky radical at the bottom.
we'll simply start by multiplying top and bottom by the "conjugate" of the denominator, recall difference of squares, anyhow, let's do so
Answer:
no bc if you simplify it's 17=18 which is not right
(2x+11)+(5x+1)=180
7x+12=180
7x=168
x=24