Solve -6x-6y-2x=14 -6x+6y-4z=22 -5-y+3z=-7
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You should eliminate one variable, hence, you need to add the first and the second equations to eliminate y such that:
`-6x - 6y - 2z - 6x + 6y - 4z = 14 + 22`
`-12x - 6z = 36`
Dividing by -6 yields:
`2x + z = -6`
You need to multiplicate the third equation by 6 such that:
`6(-5x-y+3z)=6*(-7) => -30x - 6y + 18z = -42`
You need to add the third...
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