Question

How do you solve and write the following in interval notation: `x - 4 < 1`?

Answer 1

See a solution process below:

Explanation:

Add `color(red)(4)` to each side of the inequality to solve for `x` while keeping the inequality balanced:

`x - 4 + color(red)(4) < 1 + color(red)(4)`

`x - 0 < 5`

`x < 5`

Or, in interval notation:

`(-oo, 5)`