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math

posted by on .

how do you solve:
-3y=3x-9

and

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

  • math - ,

    I'll do the first one:

    -3y=3x-9
    Divide by -3 on both sides:
    -3y/(-3)=(3x-9)/-3
    y=-x+3

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