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Simplifying N2 + 6n + 21 = 9 + -1n2 Reorder the terms: 21 + N2 + 6n = 9 + -1n2 Solving 21 + N2 + 6n = 9 + -1n2 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + N2 + -21 + 6n = 9 + -21 + -1n2 Reorder the terms: 21 + -21 + N2 + 6n = 9 + -21 + -1n2 Combine like terms: 21 + -21 = 0 0 + N2 + 6n = 9 + -21 + -1n2 N2 + 6n = 9 + -21 + -1n2 Combine like terms: 9 + -21 = -12 N2 + 6n = -12 + -1n2 Add '-6n' to each side of the equation. N2 + 6n + -6n = -12 + -6n + -1n2 Combine like terms: 6n + -6n = 0 N2 + 0 = -12 + -6n + -1n2 N2 = -12 + -6n + -1n2 Simplifying N2 = -12 + -6n + -1n2 Reorder the terms: 12 + N2 + 6n + n2 = -12 + -6n + -1n2 + 12 + 6n + n2 Reorder the terms: 12 + N2 + 6n + n2 = -12 + 12 + -6n + 6n + -1n2 + n2 Combine like terms: -12 + 12 = 0 12 + N2 + 6n + n2 = 0 + -6n + 6n + -1n2 + n2 12 + N2 + 6n + n2 = -6n + 6n + -1n2 + n2 Combine like terms: -6n + 6n = 0 12 + N2 + 6n + n2 = 0 + -1n2 + n2 12 + N2 + 6n + n2 = -1n2 + n2 Combine like terms: -1n2 + n2 = 0 12 + N2 + 6n + n2 = 0 The solution to this equation could not be determined.
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