The number 3 less than 3 times a number is 10, what is the correct formula for this number
比一个数的3倍少3的数是10，求这个数的算式正确的是多少
<gadget id="calculator">10 + 3</gadget>
<output>13</output>

<gadget id="calculator">13 / 3</gadget>
<output>13/3 = around 4.333333</output>

<result>13/3 = around 4.333333</result>