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Simplifying 0x + 0y + 0z = -20 Anything times zero is zero. 0x + 0y + 0z = -20 Anything times zero is zero. 0 + 0y + 0z = -20 Anything times zero is zero. 0 + 0 + 0z = -20 Combine like terms: 0 + 0 = 0 0 + 0 = -20 0 = -20 Solving 0 = -20 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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