anonymous
  • anonymous
Someone please help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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
jdoe0001
  • jdoe0001
I'd ... get "x" and "y" values from the given one, and test against the choices provided
anonymous
  • anonymous
I dont know how to

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dan815
  • dan815
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
dan815
  • dan815
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)
anonymous
  • anonymous
so its b?
dan815
  • dan815
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
dan815
  • dan815
yeah it is b

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