help and explain if u can pls

Answer:
C 60
Step-by-step explanation:
This is because if you do 303+60=363 and then you do 363/11 you get 33. So x=60
60
Multiply both sides of the equation by 11:
303 + x =363
Move constant to the right side and change its sign:
x = 363 - 303
Then,subtract the numbers:
x = 60