evettyoung15 evettyoung15

01-11-2017
Mathematics

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PLEASE HELP MEEE!
The perimeter of a triangle is 7a - 11b. If two of its sides are 2a + b and a - 9b, what is the third side?

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lindaperson lindaperson

01-11-2017

Hope this helps.
The answer is 4a-3b

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