There are 30 ducks in the pond, 12 less than three times the number of ducks on the bank, how many ducks are there on the bank? (solution with equation)
池塘里有鸭子30只，比岸上鸭子只数的3倍少12只，岸上有多少只鸭子？(用方程解答)
<gadget id="calculator">30 + 12</gadget>
<output>42</output>

<gadget id="calculator">42 / 3</gadget>
<output>14</output>

<result>14</result>