WILL GIVE BRANLIEST JUST SOLVE FOR X IN 4X+7

Answer:
X = 12
Step-by-step explanation:
Each angle has 90 degrees, so we know that 4x + 7 = 55. Then, we take off the 7 to get 48, so then 4x = 48. Divide that all by 4 and we get X = 12!
Hope this helped!