if y=11, b=2 so plus y&b together what is yoyr answer

Question

please can you enlight me about mathematics i need to know more about it

Answer 1

You want to know what y+b equals? In this case it's the same as 11+2, which you probably know is 13, because it's just arithmetic. All that's happened is that in algebra letters represent numbers. You're not adding letters. So all we do is substitute 11 where we see y and substitute 2 where we see b.