I have recetly covered free body diagrams and tension in my course. I had a question that required me to find the tension and acceleration of two boxes in a pulley system. My answer for acceleration was the same as the text (rounded a bit differently), but my answer for tension was way off. My issue is, that when I substitute my answer for Tension in the Fnet equations in both the vertical and horizontal planes, they both balance (ex: 535=535). But when I substitute the textbooks answer, the equations don't balance. Is there a possibility that the text is incorrect?