13 2dOn putting A=0 and B=13, we can get 13. On putting D=0 and B=13 in eqn (2), we can still get 13. Thus, we can say that the value of D cannot be determed from the given data.Lhtweht and easy to use so you can focus on animating and not what button to hit next. Seamlessly switch between raster and vector workflows, allowing you to sketch, ink &