Jerry paid off some of his debts. Two months ago, he paid $12 while last month, he paid $3 more. If his debt was $50 in all, how much does he still have to pay?
Jerry paid $12 + $3 = $
<gadget id="calculator">12+3</gadget>
<output>15</output>
15 last month.
He paid a total of $12 + $15 = $
<gadget id="calculator">12+15</gadget>
<output>27</output>
27 for two months.
Therefore, Jerry still has to pay $50 - $27 = $
<gadget id="calculator">50-27</gadget>
<output>23</output>
23.

<result>23</result>