A and B walk towards each other from two places 1200 meters apart at the same time. They meet after 10 minutes. It is known that A walks 63 meters per minute, how many meters per minute does B walk? (list two different equations, do not solve)
甲、乙两人同时从相距1200米的两地相向而行，10分钟后两人相遇，已知甲每分钟走63米，乙每分钟走多少米？(列出两种不同的方程，不解答)
<gadget id="calculator">63 * 10</gadget>
<output>630</output>

<gadget id="calculator">1_200 - 630</gadget>
<output>570</output>

<gadget id="calculator">570 / 10</gadget>
<output>57</output>

<result>57</result>