12 times of a number minus 8 times of this number, the difference is 7.6, find this number.
一个数的12倍减去这个数的8倍，差是7.6，求这个数．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">7.6 / 4</gadget>
<output>1.9</output>

<result>1.9</result>