Do this if you don't have work to do 
by subtracting the same number from  both  sides  find  what number the letter  stands for in  each of these questions
A) X+9 =23   (B) Y+11=30    (C) 15+p=29  ( D) 27+q = 34  ( E) R + 36=51 
(F) S+45 = 65
if you do it you will  get five star