We shall get 0 by adding with

Let x be the number to which when 2/9 is added, we shall get 0.

We need to find x.

So, formulate it into a mathematical equation using operators and numbers.

x is added to 2/9 can be written as,

Now, when x is added to 2/9, we get 0. That is,

To solve for x, shift 2/9 from L.H.S to R.H.S, positive sign of 2/9 will become negative.

Thus, we shall get 0 by adding with .