The perimeter of a triangle is 51 meters. The second side is twice as long as the first. The third side is 3 meters less than three times the first. What is the length of the first side of the triangle?
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Answer:9m
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the length of the first side is 9.
let the length of the first side be a metre and second side is 2a meter. according to the problem the third side is (3a-3)meter.
since,
a+2a+3a-3=51
or, 6a=54
or, a=9
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