1. The problem statement, all variables and given/known data Need help at "Forming an equation based on the fact that all the vertical forces must be in equilibrium". I'm to calculate the reactions at the supports A and B by doing: (i) Forming an equation based on the fact that all the vertical forces must be in equilibrium (ii) Taking moments about A to find the reaction at B (iii) Using your value for the reaction at B in the equation formed in part (i) to find the reaction at A 2. Relevant equations I thought that the equation that I need to form would have been an equation for finding moments, moment = force x distance. 3. The attempt at a solution For part (i) I done: M = (-30 x 0.5) + (-25 x 2.5) = -77.5 It states that they are in equilibrium so does that mean I need to add '(30 x 0.5) + (25 x 2.5)' to the equation so that it become an equilibrium? Or is what I'm doing for part (i) actually what I should be doing for part (ii) as I need to take moments for that section of the question? If so then what equation must I form for part (i)?