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siniylev [52]
3 years ago
15

Need Help ASAP. thanks in advance ​

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
6 0
  1. You can use this formula to find the perimeter of a triange, which is P=a+b+c.
  2. P=a+b+c=(2x+5)+(x+8)+(7x)=2x+5+x+8+7x=(2x+x+7x)+(5+8)=10x+13
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