I got! the answer is 19-x-9xy-14y
First find the answer of first sum,you will get 14-3x-9xy-4y after that if you will find the answer of second sum you will get 10y-2x-5 according to question subtract second sum from first sum 14-3x-9xy-4y-(10y-2x-5) the answer will be 19-x-9xy-14y.If you want the sum i can send you the sum but you have to give a message to my email that is bijaykrishna05@yahoo.in