Equation for: a number differs 4 by at most 3

Question

I need an equation that can give me the problem above in numbers. I don't know how to do it .

also the following:

a number is at a distance of 7 from -3

a number is 3 units away from 2

Answer 1

The "at most" indicates and inequality.

|n - 4| ≤ 3