48 is the answer what you do is 85 + 47 = 132 then you do 180 - 132 = 48. If you don't understand where I got 180 from, then I'll go into more detail, all angles are supposed to equal 180 so if you want to check your work you do 85 + 47 + 48 = 180!! Glad I could help!! (:
X=48