plz help me evaluate 5ab+a a = 2 b= 1

Answer:
The answer to the equation in the title is 11
Step-by-step explanation:
So since you know that a is 2, you multiply 5x2. Then you get 10. After that, you multiply 10x1 which is 10. And then you add that to 2 because we know that a is 2. So the answer is 12