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Simplifying 5y2 + 2y + 4x + -13x2 = 81 Reorder the terms: 4x + -13x2 + 2y + 5y2 = 81 Solving 4x + -13x2 + 2y + 5y2 = 81 Solving for variable 'x'. Reorder the terms: -81 + 4x + -13x2 + 2y + 5y2 = 81 + -81 Combine like terms: 81 + -81 = 0 -81 + 4x + -13x2 + 2y + 5y2 = 0 The solution to this equation could not be determined.
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