this won't make any sense at first. Write the key 17 at the top in the spaces almost designed for it. Then do the same on the bottom with 18. There's a pattern relating to those numbers attached to the lines. Add them up.
this won't make any sense at first. Write the key 17 at the top in the spaces almost designed for it. Then do the same on the bottom with 18. There's a pattern relating to those numbers attached to the lines. Add them up.