到2005年的年底，Walter的岁数就是他祖母的一半；Walter和他祖母出生的年份加起来和为3860.
请问Walter到 2006年年底是多少岁？
设2005年Walter 为x岁
2005-x+2005-2x=3860
x=50
所以Walter 到 2006年年底是51岁；能不能告送我方程的过程？2005-x 即为Walter 的出生年份 20...
超难的英语问题At the end of 2005 Walter was half as old as his gran
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