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30 April, 23:38

How to solve - 6x + 3y = 18

Y=2x - 2

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Answers (2)
  1. 30 April, 23:41
    0
    -6x + 3 (2x-2) = 18

    -6x + 6x - 6 = 18

    -6 ¥ 18

    no solution
  2. 30 April, 23:56
    0
    Let's solve this by substitution. Note that y is defined: y = 2x - 2. Subst. 2x - 2 for y in the other equation: - 6x + 3 (2x - 2) = 18.

    Then - 6x + 6x - 6 = 18. Unfortunately, - 6 does not equal 18, so there is no solution. The graphs of these two lines are parallel.
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