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Simplifying 3x4 + 5x3 + -12x2 + -20 = 0 Reorder the terms: -20 + -12x2 + 5x3 + 3x4 = 0 Solving -20 + -12x2 + 5x3 + 3x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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