R rustman Guest Jan 11, 2009 #2 You need to get either x or y the same in both equations. The easiest way is to multiply the top by 2. 2x + 4y = 8 3x - 4y = 7 Add the two equations together to get rid of y 5x = 15 x = 3 Put 3 into an equation: 3 + 2y = 4 2y = 1 y = 0.5 There you go!
You need to get either x or y the same in both equations. The easiest way is to multiply the top by 2. 2x + 4y = 8 3x - 4y = 7 Add the two equations together to get rid of y 5x = 15 x = 3 Put 3 into an equation: 3 + 2y = 4 2y = 1 y = 0.5 There you go!
