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10 February, 21:01

Solve the system of equations using substitution.

{y=9x

6x-y=-1

+1
Answers (1)
  1. 11 February, 00:06
    0
    x = 1/3

    y = 3

    Step-by-step explanation:

    6x - 9x = - 1

    -3x = - 1

    x = 1/3

    y = 9

    y = 9 (1/3)

    y = 3

    CHECK:

    6 (1/3) - 3 = - 1

    2 - 3 = - 1

    -1 = - 1
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