Find the value of x: ((x-1)/(1.2))=((6.25)/2).
求x的值：((x-1)/(1.2))=((6.25)/2)．
<gadget id="calculator">6.25 / 2</gadget>
<output>3.125</output>

<gadget id="calculator">3.125 * 1.2</gadget>
<output>3.75</output>

<gadget id="calculator">1 + 3.75</gadget>
<output>4.75</output>

<result>4.75</result>