Question

a number subtracted from x gives a difference of -1.what is the number?

Answer 1

Excuse my ignorance, but it appears we might be missing some data from this question. From you you have told us. x-y=-1

Answer 2

let x be the given number

Answer 3

We need some more information. I appears that this will end up a simultaneous eqn, but we need more data, excuse me if its just my ignorance here.

Answer 4

but it is just that according to the book where i got this equation from