Someone answer this fast pls last thing I need to do for tonight

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?