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In this part of the course, I will solve the next task step by step. In this task, I calculate the support reactions in a simply supported beam. The beam is loaded with a uniformly distributed load, a concentrated vertical force and a horizontal concentrated force. I will start by adopting the coordinate system and replacing the supports with the appropriate reactions. In the next step, I will replace the uniformly distributed load with the resultant force in the center of gravity of the uniformly distributed load. Then, using equilibrium equations, I will calculate the sum of projections of forces onto the axes of the coordinate system and the sum of moments at the support points. From the above equations I will determine the values ​​of support reactions in each of our beam supports. By the way, I will teach you how to easily deal with marking moments on beams. Finally, I will show you how to check the values ​​of the calculated support reactions.