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12 July, 00:18

Substitution method

x = - 2y

2x+5y=-1

+1
Answers (2)
  1. 12 July, 01:29
    0
    so if X is - 2y then u put that in for x and get - 4y and then add 5 to get 9
  2. 12 July, 01:33
    0
    So you would put - 2y in for x. It would become 2 • - 2y + 5y = - 1

    Simplify and the answer is y = - 1
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