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The perimeter of a triangle is 49 cm. One side is 7 cm more than the second side and 5 cm less

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The perimeter of a triangle is 49 cm. One side is 7 cm more than the second side and 5 cm less than the third side. Find out the lengths of three sides?

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Let the second side = x cm

First side = x + 7 cm

Third side = x + 12 cm

Perimeter = x + x + 7 + x + 12 = 49

= 3x = 49 – 19 = 30

3x = 20, x = 10 cm

The sides are = 10 cm, 17 cm, 22 cm

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