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solniwko [45]
3 years ago
7

A triangle has side lengths of (3a – 7),

Mathematics
1 answer:
Ratling [72]3 years ago
3 0

Answer:

6a+8

Step-by-step explanation:

To find the perimeter of a shape add all the sides up

To do this just add everything together

this means we have

3a-7+a+14+2a+1

Add like terms and get

6a+8

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