The angle 8x-4 is 60 degrees, since you know that the other angle is 60 and they are corresponding angles. From these facts, you can write an equation 8x-4=60. To solve this, you can first add 4 to both sides and the left side will be just 8x since you canceled the 4 out and the right side is 64, because you added a 4 to it. To solve for x, you divide both sides by 8 to cancel out the 8 on the left and you divide 64/8 to get 8 as the answer for x. x=8.