Question 9834
ok you got -34x+5y+18x-14y 
start with x dont have to but let start there.
the easy thing to do is add every thing if it have a subtraction just say it is a nagative that you are adding. 
add -34 + 18x giving you -16x  now work your y
5y + -14y = -9y that it so put them together
-16x-9y is your answer