There are 120 peach trees in the orchard, which is 10 fewer than twice the number of pear trees. How many pear trees are there? (column equation solution)
果园里有桃树120棵，比梨树的2倍少10棵，梨树有多少棵？(列方程解答)
<gadget id="calculator">120 + 10</gadget>
<output>130</output>

<gadget id="calculator">130 / 2</gadget>
<output>65</output>

<result>65</result>