Since we need to work backwards, we will be doing the opposite of what the problem says. Think, if Tyler weighs 22 1/2 pounds on the moon, what do we have to do in order to find his weight on earth? In other words, “his weight on earth = his weight on the moon * 6 (because it is the opposite of 1/6) okay, let’s fill in what we know. His eight on earth (don’t know yet) = his weight on the moon (22 1/2 pounds) times 6. Okay so we basically have x = 22 1/2 * 6. Solve for x, so multiply 22 1/2 by 6 using a calculator or hand written multiplication. This will be your answer! So overall, on earth, Tyler weighs 135 pounds. Hope this helped! Good luck!