Answer:
3
Explanation:
Let's do this step by step! 
Step 1: Combine like terms. Like terms are things that can go together. (Example: 6 and 12x are no like terms but, 6 and 9 are!) 
- make sure to move UN-ALIKE terms on the opposite side of the equation from the other. 
14x + 3x - 40 = 11 
17x - 40 = 11 
17x = 11 + 40 
17x = 51
Step 2: Isolate the variable x! Do this by using multiplication or division. 
-In this case, we will use division 
x = 51 ÷ 17 
Step 3: Solve! 
x = 3 
Final answer: 3 
Hope I helped! Let me know if you have any questions or would like for me to explain further.