is this true or false and why?

Question

the bank was asked to reverse A service charge they’d previously assessed, could the following problem be the correct way of calculating this? $120 - (-25) = $145. True or false

Answer 1

true

subtracting a number is the same as adding it's opposite

$120-(-$25)=$120+$25=$145

taking away a debt (or charge) is the same as giving you the money

Answer 2

Yes, Toni, true. Let's think about it...

 

I had $145 but my bank charged me a $25 service fee. I now have $145 - $25 = $120.

 

I called and asked for a refund on that service charge, so they subtract it back out. I now have $120 - (-$25) = $145, what I started with.

 

This is one practical application of negative numbers!