I have a problem with this, pls give me some way to solve it

Figures a and b below show sets of electric charges. The charges are labelled A, B, Cwith positions. The magnitudes of the charges are equal (lQAl = ngl : iQC l) but there are different signs. On each gure are two points marked with a numbered \"x\". Draw the eld diagram for each point labelled x. A eld diagram is very much like a Free Body Diagram. with the point x at the origin and arrows representing the electric eld due to each of the charges individually. Be sure to label each of the arrows to indicate a charge creating the corresponding electric eld. Do not draw the total electric eld on the eld diagrams, just like you don't draw the total force on a free body diagram