document.write( "Question 1193200: In the figure, a ∥ b ∥ c and B is the midpoint of AC.
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document.write( "AB = 2x + 5, BC = x + 7, and DE = 3x + 6.
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document.write( "x =
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document.write( "Find the length of
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document.write( "DE.
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document.write( "DE =
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document.write( "Because a ∥ b ∥ c and B is the midpoint of
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document.write( "AC,E is the midpoint of
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document.write( "DF and EF =
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document.write( " .
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document.write( "Find the length of
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document.write( "EF.\r
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