In the fourth video 2x-16 will get cancelled on both the sides... how have you subtracted them and taken common ? Share with your friends Share 0 Shubham answered this we are not cancelling we are taking d1+d2=d3+d3 0 View Full Answer sau_2121 answered this Yes , u are right !! 0 Amritha P answered this you are right but i don't belive you..... 0 Samridhi Sunil Sinha answered this please see the video once more i think you are wrong 1 Swoyamsiddha Behera answered this there is an error i think 0