Bag A contains A kilograms of flour, and Bag B contains B kilograms of flour. If 6 kilograms are taken from Bag B and put into Bag A, and the weights of the two bags are equal, what is the equation?
甲袋有A千克面粉，乙袋有B千克面粉，如果从乙袋取出6千克放入甲袋中，甲乙两袋重量相等，列等式是多少．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>