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29 September, 05:50

X = - 2y

x-y=9

Solve using substitutio

+2
Answers (1)
  1. 29 September, 08:14
    0
    y = - 3; x = 6

    Step-by-step explanation:

    -2y - y = 9

    -3y = 9

    y = - 3
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