解决多步方程测验 欢迎来到求解多步方程测验请输入您的电子邮件，然后单击“下一步” 电子邮件 解方程x = 12x = 2x = -12解方程n = 2n = 10n = 2.5解方程x = 2x = -2x = 3解方程x = 2x = -2x = 4/3解方程t = 36t = 0t = 1解方程m = 4m = -20/3m = -4时间到了！
