当x=2时，函数y=kx+10与y=3x+3k的值相等，则k的值是．

当x=2时，函数y=kx+10与y=3x+3k的值相等，则k的值是．

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当x=2时，函数y=kx+10与y=3x+3k的值相等，则k的值是 ．

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当x=2时，函数y=kx+10与y=3x+3k的值相等，则k的值是．