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I NEED HELP PLZ , i’m stuck and i don’t get it

I NEED HELP PLZ , i’m stuck and i don’t get it-example-1

1 Answer

8 votes

Answer:

Explanation:

2x+6+2x+6+2x+6=180

why, bc they all have equal sides

6x+18=180

6x=162

x=27

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