You can put this solution on YOUR website! Two linear equations in the variables, a and b, which may have a point of intersection. That is, a pair of a and b may be a solution to both equations.
2a + 8b = 22,
-2a + b = 5.
If you need to find the solution of this system of equations, then add these two equations (both sides).
It will give you an idea what to do next . . .