Why can a subtraction problem be written as an addition problem without changing the outcome?
give a real-world scenario where this might be modeled

If you say "If you subtract 3 dollars from my money", it could be rephrased as "If u add add three dollars to your money you will get mine"

$100- $50= $50 
and 
$100+(-5o)= $50
i hope dis helps

Just change the sign. You use one set of eggs how many do you have left