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

if u say "if u substract 3rupees from my money", it could be rephrased as "if u add tadd three rupees to your you will get mine

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

4hours and 40 mins she would be 120 meters high