Write the given question on a green board with chalk and solve it. There is a number y. Multiply that number by 3. Add the same number y to it. Then it becomes 6×x. When x = 2, what is y?
请将以下问题用粉笔写在绿板上并解答。 有一个数字 y。将该数字乘以 3。然后加上相同的数字 y。结果是 6×x。 当 x = 2 时，y 是多少？
