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I’m lost could some one please help

I’m lost could some one please help-example-1

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You know one angle is 72°. They all equal 180. Subtract 72 from 180. Take the remaning answer and subtract 2 from the *x +2* so you have 2 x's. Devide the remaing number by two and thats the x value.

User Rich Hildebrand
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