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3 years ago

What is the solution of the system defined by y= -x+5 and 5x + 2y = 14?

1 answer:

5 0

  y = -x + 5
5x + 2y = 14

5x + 2(-x + 5) = 14
5x + 2(-x) + 2(5) = 14
5x - 2x + 10 = 14
3x + 10 = 14
- 10 - 10
3x = 4
3   3
  x = 1¹/₃
  y = -x + 5
  y = -1¹/₃ + 5
  y = 3²/₃
(x, y) = (-1¹/₂, 3²/₃)

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