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Simplifying r6 + -3r4 + 3r2 + -1 = 0 Reorder the terms: -1 + 3r2 + -3r4 + r6 = 0 Solving -1 + 3r2 + -3r4 + r6 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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