SOLVING WITH ELIMINATION ! NON-STANDARD FORM!!!! HELP?

4y = 3x + 5

6y = 3x + 21

3 Answers

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  • 8 years ago
    Favorite Answer

    To eliminate means that we need to get it down to one variable so that we can solve for it.

    both equations have 3x, so if we subtract the equations we can remove the 3x.

    4y = 3x + 5

    -

    6y = 3x + 21

    (both sides are equivalent so we're essentially subtracting the same thing form both sides)

    =

    -2y = -16

    y = 8

    Now plug 8 into one of the equations for y to find that x = 9

    TIP: If you have to do this in the future both equations likely wont have 3x i.e. one could have 6x and the other 3x. In that case you'd have to multiply the equation containing 3x by 2 so that you can eliminate it through subtraction.

  • Mike G
    Lv 7
    8 years ago

    2y = 16

    y = 8

    x = 9

  • dyles
    Lv 4
    4 years ago

    ok. let's distinctive the first eq with -a million. we get -2y = -4x + 16 now shall we upload both equations toghether time period by technique of time period. we get : 3y = 24 . fixing for y we get y = 8. using this interior the fist equation we receives 16 = 4x - 16 =< 4x = 32 => x=8

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