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son4ous [18]
2 years ago
6

I NEED HELP FAST!!!!

Mathematics
1 answer:
andrezito [222]2 years ago
3 0

Step-by-step explanation:

  • <em>Exterior angle is same as sum of remote interior angles.</em>
  • Solving for x in each case below.
<h3>#7</h3>
  • 5x + 10 + 58 = 11x + 2
  • 5x + 68 = 11x + 2
  • 11x - 5x = 68 - 2
  • 6x = 66
  • x = 11
<h3>#8</h3>
  • 10x - 10 + 30 = 12x - 4
  • 10x + 20 = 12x - 4
  • 12x - 10x = 20 + 4
  • 2x = 24
  • x = 12
<h3>#9</h3>
  • 46 - 1 + 8x = 18x + 5
  • 8x + 45 = 18x + 5
  • 18x - 8x = 45 - 5
  • 10x = 40
  • x = 4
<h3>#10</h3>
  • 15x + 5 + 22x + 4 = 120
  • 37x + 9 = 120
  • 37x = 111
  • x = 3
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