Instead of doing yours for you I'll do one exactly like yours in every
detail, so you can use it as a model to do yours by.  I'll do this one
instead:




Write the square root of a fraction as a fraction of
square roots:


                     _
Multiply through by √27



 Take out the square roots of 729 and 81 as 27 and 9 on the left



Combine the like terms on the left



Divide both sides by 35



Square both sides





Now do yours the same way:

Edwin