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After making the listed transactions, the account balance would be:
348 - 234 + 147 - 85 = 176
If the next transaction causes the balance to be -43, then either a payment or a withdrawal has been made.
The amount of the last transaction is 176 + 43 = 219
Solution: The final transaction was a payment or a withdrawal of $219.
Please feel free to ask if you have any questions about this solution.
Yes. It would look like this:
Let x represent the unknown final transaction. Then you would write:
348 - 234 + 147 - 85 + x = -43
You would then rearrange this to isolate the variable x on one side to get:
x = -43 - 348 + 234 - 147 + 85
x = -219
Since the value of x is negative, this indicates that the final transaction removed $219 from the account.
Therefore, the final transaction was either a payment or a withdrawal of $219.
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