Answer:
x=4
Step-by-step explanation:
Let he first piece be x the second be 3x and the very last one be 7x + 2
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Add all the pieces together and you ought to get the length of the rope which is 46 ft
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So your equation would be
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x + 3x + 7x + 2 = 46
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11x = 44
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x = 44 / 11
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x = 4
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so the 3 pieces are 4 , 12 and 30ft