Question

kaileys bank account balance was -$65.12 at the end of july. in september, the size of her debt increased by $21.55. she wants her bank account to have a balance of zero by the end of november. how much will kailey have to make?

Answer 1

To get the answer, just add the original balance and debt increase.

-$65.12 + -$21.55
= -$86.67

-$86.67 + x = 0

(Property of equality)
-$86.67 - 0 = -x

$86.57 = x

She needs to make $86.67 to get her balance to zero.

(Edit - I read the question wrong and have edited my answer. My apologies)
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Answer 2

$86.67 (p.s. my name is Kailey and that's part of why I answered this problem