You can put this solution on YOUR website! Get all the x-terms to one side (I chose the right side) and all the non-x terms on the other side (I chose the left side).
Begin by adding +x to each side.
2c - x + x = 4x + x + c - 5b
2c = 5x + c - 5b
Next add -c and +5b to each side of the equation.
2c - c + 5b = 5x + c - 5b - c + 5b