Solving Linear Systems: Using Substitution x=3y-4 3y – 4x = 6 someone pls help

Question

Solving Linear Systems: Using Substitution
x=3y-4
3y – 4x = 6
someone pls help

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Khang Minh 3 years 2021-08-17T04:16:33+00:00 1 Answers 10 views 0

Answers ( )

  1. Sigrid
    0
    2021-08-17T04:18:18+00:00
    Reply

    Answer:

    x = -2/3

    y = 10/9

    Step-by-step explanation:

    3y – 4x = 6

    x=3y-4

    Substitute the second equation into the first for x

    3y – 4( 3y-4) =6

    3y – 12y +16 = 6

    Combine like terms

    -9y +16 = 6

    Subtract 16 from each side

    -9y +16-16 = 6-16

    -9y = -10

    Divide by -9

    -9y/-9 = -10/-9

    y = 10/9

    x = 3y -4

    x =3(10/9) -4

     =10/3 – 12/3

      =-2/3

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