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31 December, 19:28

2x+y=-11; 3x-4y=11

How do I solve this by substitution?

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Answers (2)
  1. 31 December, 21:43
    0
    This is the answer!; )
  2. 31 December, 22:03
    0
    1) 2x+y = - 11

    2 * (-6) + 1=-11

    1) 3x-4y=11

    3*9-4*4=11
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