answered 9/17/2009 Can You Solve Using The Substitution Method 4x+2y=7 And Y=5x? 4x + 2y = 7 4x = 7 - 2y x = (7 - 2y) / 4 y = 5x (substitute the last equation) y = 5((7 - 2y) / 4) y = (35 - 10y) / 4 y = (35/4) - (5y/2) y + (5y / 2) = 35 / 4 7y / 2 … Read more
