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從三種情况考慮:第一種:當x≥73時,原方程就可化簡為:x+5-3x+7=1,解得:x=112符合題意;第二種:當-5<x<73時,原方程就可化簡為:x+5+3x-7=1,解得:x=34符合題意;第三種:當x≤-5時,原方程就可化簡為:-x-5+3x-7=1,解得:x=132,不符合題意;所以x的值為112或34.故答案為:2.
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