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OpenStudy (anonymous):
Find the perimeter of a triangle ABC with sides 5w,w-7,and -2w+15
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OpenStudy (campbell_st):
Perimeter is the sum of the straight sides so P = 5x + w - 7 - 2w + 15 collect the like terms.
OpenStudy (campbell_st):
oops should be P = 5w + w - 7 -2w + 15
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