haydenbunny2009
haydenbunny2009 haydenbunny2009
  • 15-10-2021
  • Mathematics
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sphaziza sphaziza
  • 15-10-2021
Answer x = 8

Solving steps

80° +(7x-1)° +(6x-3)° =180°

x = 8
Answer Link

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