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anonymous

  • one year ago

Someone please help

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  1. anonymous
    • one year ago
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    Choose the equivalent system of linear equations that will produce the same solution as the one given below. 6x + 2y = -6 3x - 4y = -18 12x + 4y = -12 15x = -30 8x + 4y = -4 14x = -10 6x - 8y = -36 -6y = -42 6x - y = -15 3y = 9

  2. jdoe0001
    • one year ago
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    I'd ... get "x" and "y" values from the given one, and test against the choices provided

  3. anonymous
    • one year ago
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    I dont know how to

  4. dan815
    • one year ago
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    if you look at the 2nd equation for every pairs of equations 15x = -30 14x = -10 -6y = -42 3y = 9 you can solve for the x or y, and sub it back into the equation about to solve for the otehr x or y

  5. dan815
    • one year ago
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    or working with your 2 equations given 6x + 2y = -6 3x - 4y = -18 you can multiply the 2nd equation by -2 and add both of the equations 6x+2y=-6 eqn(1) -2(3x-4y=-18) eqn(2) 6x+2y=-6 eqn (1) -6x+8y=+36 eqn (2) if you add both equations 6x+2y=-6 10y=30 <-------- this is a result of adding equation (1) and (2)

  6. anonymous
    • one year ago
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    so its b?

  7. dan815
    • one year ago
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    try multiplying the 1st equation by 2 this time and add it to the bottom one see what u get 6x + 2y = -6 3x - 4y = -18

  8. dan815
    • one year ago
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    yeah it is b

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