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10 December, 01:45

3x-9 = -18

3x + 6y=27 substitution problem

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Answers (2)
  1. 10 December, 03:32
    0
    Solve for x in the first equation then use it in the second one to solve for y

    x = - 3

    y = 6

    Step-by-step explanation:

    3x-9 = - 18 - -> 3x = - 9 - -> x = - 9/3 - -> x = - 3

    3 (-3) + 6y=27 - -> - 9+6y=27 - -> 6y=36 - -> y=36/6 - -> y=6
  2. 10 December, 04:28
    0
    x = - 3 y = 6
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