Question

Is number 1 right and if so why?

Answer 1

Answer:

Yes, 8 is a solution.

Step-by-step explanation:

$LHS=\frac{1}{2}x+9\\\\=[\frac{1}{2}*8]+9\\\\=4+9\\\\=13=RHS$

When you are substituting x = 8, you can get the result 13. so 8 is the solution