Please solve px if , qx=11.5-0.4px showing all steps. Thanks you need to reverse PEMDAS! qx - 11.5 = -0.4px DO the opposite operation to move the 11.5 to the opposite side. Subtract 11.5 from both sides. qx/-0.4 - 11.5/(-0.4) = px Divide both sides by -0.4. -1/0.4qx + 11.1 = px