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Irina-Kira [14]
3 years ago
10

If the perimeter of the following triangle is 7x-2, what is the length of the unknown side?

Mathematics
2 answers:
alisha [4.7K]3 years ago
5 0
 unknown side = <span>7x-2 - (3x - 9 + x + 7)
</span> unknown side = 7x - 2 -3x + 9 -x - 7
 unknown side = = 3x 

answer

 unknown side = 3x
AnnZ [28]3 years ago
4 0

perimeter = s+s+s

 so 7x-2 = (3x-9) + (x+7) + ?


3x-9 + x+7 = 4x-2

7x-2 - 4x-2 = 3x


remaining side is 3x

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