Uncle Zhang surrounded the rectangular vegetable garden with a length of 17 meters and a width of 8 meters. One of them is long against the wall and does not need to be fenced. How many meters is the fence in the vegetable garden?
张大伯给长17米，宽8米的长方形菜园围上篱笆．其中有一条长靠墙不用围，请问菜园的篱笆长多少米？
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