yea the answers are x= 7.278(3dp) or x= ((9rt5)+(510rt2))/(7+(30rt10)) in surd form and y= 1.453 or y = 148/(7+(30rt10)) in surd form. The question requires manipulation of surds. As long as you can play around with big numbers then you should be able to solve it. You just make the second equation which has a lone y value equal to the rest of the equation and substitute that into the 1st equation. You need to simplify the surds and rationalise the denominators in some cases just to make it a bit easier. Perhaps you should start by simplifying the 3rt50 into 15rt2 and then work from there. I hope I've explained it properly.
Angu