Find the bullet train headed to the right. No, that is vertical. This shape is horizontal and slopes down to a point at the very left. Good! Now remove the first shape.
page4-192.png page7-69.png page3-42.png page4-113.png
page4-192.png page6-22.png page4-98.png page3-44.png page9-30.png page3-42.png page5-176.png page7-69.png page4-113.png page8-236.png
page3-42.png page4-98.png
Reverse what you just did: bring back what you deleted and remove the other one.