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22-10-2017
Mathematics

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2x-3y-3z=-14 6x+2y-2z=-2
4x+2y-4z=-2

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Аноним Аноним

22-10-2017

+2x- 2y + 3z =-4
2(-3) - 2(-7) + 3(-4) = -4
-6 + 14 - 12 = -4
-18 + 14 = -4

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