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zepelin [54]
3 years ago
15

What is CBE for this one I need help??

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Step-by-step explanation:

42+5x+7x+6=180 (sum of angles in straight line is 180)

  • 48+12x=180
  • 12x=180-48
  • 12x=132
  • x=132/12
  • x=11

now m <CBE =7x+6=7×11+6=77+6=83

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