Finding the resultant force, moment, and x-y coordinates

j19063dc
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Homework Statement
I am trying to find help with finding the x any y coords of the resultant force, I have found the resultant force and moment but i think i may have run into problems finding the x and y coordinates. I know tha m_x' = sum Mx' but im unsure of the equation
Relevant Equations
M_x' = sum Mx', My'=sumMy'
Screen Shot 2021-10-15 at 10.06.05 PM.png
 
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You have missed out a step. You need to find the resultant force as a vector, not just its magnitude, before you can find the point where it acts.
 

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