You can put this solution on YOUR website! The second equation is already solved in terms of , so you can just take the expression in to which is equal and substitute that expression for in the first equation. This gives you a single equation in a single variable:
Solve for . Once you have determined the value for , substitute that value into the second equation and do the arithmetic to determine the value of .
To check your answers, substitute the values for and into both equations and verify that the result is a pair of true statements.