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17 March, 13:53

A triangle has a perimeter of 33cm. If the three sides of the triangle are n, 3n-4, and 3n-5, what is the length of each side?

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  1. 17 March, 14:11
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    Just did this one.

    The perimeter is the sum of the sides.

    n + (3n - 4) + (3n - 5) = 33

    7n - 9 = 33

    7n = 42

    n = 6

    3n-4=18-4=14

    3n-5=13

    Check: 6+14+13=33, good

    Answer: 6 cm, 14 cm, 13 cm
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