Question

I don't even know how to start on this one.

(Going to insert a picture in the comments)

Answer 1

If anyone can help me please do idek what to do

Answer 2

Hey. Basically, what you do is use the "transaction amount" as the action to be done on the balance. For example, in the first transaction, you have +200, which makes your current balance 200. In the second transaction, you subtracted 143 (as implied by the negative sign), so you have 57 left in your balance. In the next transaction you have +90, so you add that amount to your current balance and so on.

Answer 3

For the last transaction, you have to find a number (either positive or negative) that will make your balance zero.