Answer:
30, 41 and 66 cm.
Explanation:
x + 7 + 2x - 5 + 3x - 3 = 137
6x - 1 = 137
6x = 138
x = 23
So the lengths of the sides are:
23 + 7 = 30.
2(23) - 5 = 41 and
3(23) - 3 = 66.
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