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OpenStudy (anonymous):
the perimeter of a triangle is 87 centimeters. if two sides are equally long and the third is 9 centimeters longer than the others find the length of teh three sides.
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OpenStudy (anonymous):
|dw:1349638161426:dw|
OpenStudy (anonymous):
Perimeter is all sides added together so, x+x+x+9=87 now solve for x
OpenStudy (anonymous):
is it x=39?
OpenStudy (anonymous):
or x=18
OpenStudy (anonymous):
Not quite. First add like terms 3x+9=87 then subtract 9 from both sides 3x=78 x=26
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