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Find x, and determine if n is parallel to m. Justify

need help asap :/

 

 Sep 27, 2020
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Sum of triangle angles = 180

3x + 3x+8  +  9x+7 = 180

 

Then solve for x     then   if    3x +8     + 139 = 180  (straight line)        then the lines are parallel

 Sep 27, 2020

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