You can
put this solution on YOUR website!Solve the "system of equations":
This is quite straightforward, you just have to mind your p's and q's (lol)

Rewrite this equation as:

and substitute for p into the first equation.

Simplify this and solve for q.

Combine like-terms.

Subtract 21 from both sides.

Finally, divide both sides by -2.

Now substitute this for q into the second equation and solve for p.

Subtract 5 from both sides.

The solution is: p = 2 and q = 5