Question 761086
3x +(90 - x) = 114
2x + 90 = 114
     2x = 114 - 90
      2x = 24
       x = 12
Proof:
3x + (90 - x) = 114
3(12) + (90 - 12) = 114
  36  +  78  =  114

 Angle = 12 degrees.
Hope this helps.
:-)