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Anna71 [15]
3 years ago
10

I need help, please Thanks! winner gets 60 points

Mathematics
1 answer:
gavmur [86]3 years ago
7 0

Step-by-step explanation:

  • 20°+(6x-2)°=90°
  • 20+6x-2=90
  • 18+6x=90
  • 6x=90-18
  • 6x=72
  • x=72/6
  • x=12
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