So the longer lines are 2x longer than the shorter lines Look at line segment BD 40 is 2x as long as 9x+2 In order to make the equation true, multiple 9x+2 by 2 So, you should get: 40=18x+4 36=18x x=2 Plug the 2 into 19X+14, and divide that answer by 2, because GF is 2x smaller than AG 19x+14 19(2)+14 52 52/2=26 Hope this helps!!