1. The problem statement, all variables and given/known data Write the shear and moment diagram equations and graph them. 2. Relevant equations 3. The attempt at a solution I attached my attempted solution in a pdf (I know the last section of the moment diagram is supposed to be parabolic, I accidentally drew a straight line instead). I can't figure out what I'm doing wrong. When I use the method where you just calculate the areas of the shear diagram to get the moment diagram, I get the correct answer. But when I use my moment equation I get 180 instead of 90. I feel like I've had previous problems where my answer was off by a factor of 2. I would really appreciate if someone could catch where I'm making a mistake!