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A carpenter cuts off from a plank 5/12 of its length and then 6/7 of what remains. If the remaining piece is 2 and 1/2 m long, find the original length of the plank.

Answer» A carpenter cuts off from a plank 5/12 of its length and then 6/7 of what remains. If the remaining piece is 2 and 1/2 m long, find the original length of the plank.


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