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26 December, 18:05

2x+2y=4 y=12-3x

Substitution

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Answers (1)
  1. 26 December, 21:39
    0
    2x + 2 (12-3x) = 4

    2x + 2 x 12 + 2 x 3x = 4

    2x + 24 + 6x = 4

    6x + 2x = 8x

    8x + 24 = 4

    24/4 4/4

    6 = 8x

    x =.75
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