(5x + y)/a = 2 Given a*(5x + y)/a = a*2 Multiply each side by a 5x + y = 2a Simplify (5x + y)/2 = 2a/2 Divide each side by 2 (5x + y)/2 = a Simplify a = (5x + y)/2 Symmetric Property 3/4/2013 | John R. Comment