math
posted by jennifer .
the perimeter of a triangle is 76 centimeters. the second side is twice as long as the first side. the third side is four centimeters shorter than the second side. how long is each side?

math 
PsyDAG
Let x = first side,
then 2x = second side and
2x  4 = third side.
x + 2x + 2x  4 = 76
Solve for x.
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