We shall get 0 by adding with

Let x be the number to which when -9/8 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 -9/8 can be written as,

Or,

Now, when x is added to -9/8, we get 0. That is,

To solve for x, we need to shift 9/8 to R.H.S. Negative sign of 9/8 will become positive.

Thus, we shall get 0 by adding with .