# algebra

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The perimeter of a triangle is 47 miles. The first side is 5 miles less than twice the second and the third is 2 miles more than the first. Find the lengths of each side.

• algebra -

if x is second side,
first is 2x-5
third is 2x-5+2 = 2x-3
so,
2x-5 + x + 2x-3 = 47
5x = 55
x = 11

So, the 3 sides are 17,11,19

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