If the question asks you to solve it graphically, usually it means you need to draw another graph and see how the two graph intercept each other, because the point of intercept is when Graph A = Graph B.

So step 1 is to manipulate the equation from the question so that the left hand side of the equation looks like your current graph equation.

Step 2 is to draw the graph based on what is on the right-hand side of the equation after you have done your manipulation.