U move 12, then it will become 52-12=4w (do u know why it bcme -12? Bcz if you move positive it will become negative. And if you move negative, it will become positive) then it would b like this 40=4w and bring over your 4 become 40/4=w (its multiply so u bring over it become division) and the ans is 10. Hope you understand me:)) and u plot 10 on ur no. line :>
