The difference of 93 minus x is equal to the sum of 31 plus x, find the value of x.
93减去x的差等于31加x的和，求x的值．
<gadget id="calculator">93 - 31</gadget>
<output>62</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">62 / 2</gadget>
<output>31</output>

<result>31</result>