Patricia started with $125.82 in her account.
Then she makes a deposit of $20.75 , which increases the total in the account by:
$125.82 + $20.75 = $146.57
Then she makes a withdrawal of $15.90, wiich reduces the amount since she is extracting money from the account:
$146.57 - $15.90 = $130.67
The total left in the account after the deposit and after the withdrawal is: $130.67.