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The scouts decided to clean up the stream outside the town. On the first day, they cleared half of the total length of the stream. On the second day, 2/7 of the entire length. On the third day, they cleared a third of what was left, and on the fourth day, they cleared 800 meters. How long was the stream?

Correct answer:

x =  5600 m

Step-by-step explanation:

x/2+2/7 x+(xx/22/7 x)/3+800=x  6x=33600  x=633600=5600  x=5600=5600 m

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