Answer:
A real-life situation can be:
You have a week to save more than 20 dollars because you need a new sweater, your mom gives you x dollars to help you and you save another x dollars. Additionally, at the end of the week, you also need to pay 4 dollars to your brother.
The situation can be represented by:
x + x - 4 > 20
Because at the end of the week you will save x + x - 4 dollars.
This inequality is equivalent to:
2x - 4 > 20