Point V is on line segment start overline, U, W, end overline UW . Given V, W, equals, x, plus, 7, caVW=x+7, U, W, equals, 3, x, minus, 9, commaUW=3x−9, and U, V, equals, 8, commaUV=8, determine the numerical length of start overline, U, W, end overline, . UW .

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