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Simplifying N3 + -2n2 + -1n2 + 2n = 990 Reorder the terms: N3 + 2n + -2n2 + -1n2 = 990 Combine like terms: -2n2 + -1n2 = -3n2 N3 + 2n + -3n2 = 990 Solving N3 + 2n + -3n2 = 990 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '-2n' to each side of the equation. N3 + 2n + -2n + -3n2 = 990 + -2n Combine like terms: 2n + -2n = 0 N3 + 0 + -3n2 = 990 + -2n N3 + -3n2 = 990 + -2n Add '3n2' to each side of the equation. N3 + -3n2 + 3n2 = 990 + -2n + 3n2 Combine like terms: -3n2 + 3n2 = 0 N3 + 0 = 990 + -2n + 3n2 N3 = 990 + -2n + 3n2 Simplifying N3 = 990 + -2n + 3n2 Reorder the terms: -990 + N3 + 2n + -3n2 = 990 + -2n + 3n2 + -990 + 2n + -3n2 Reorder the terms: -990 + N3 + 2n + -3n2 = 990 + -990 + -2n + 2n + 3n2 + -3n2 Combine like terms: 990 + -990 = 0 -990 + N3 + 2n + -3n2 = 0 + -2n + 2n + 3n2 + -3n2 -990 + N3 + 2n + -3n2 = -2n + 2n + 3n2 + -3n2 Combine like terms: -2n + 2n = 0 -990 + N3 + 2n + -3n2 = 0 + 3n2 + -3n2 -990 + N3 + 2n + -3n2 = 3n2 + -3n2 Combine like terms: 3n2 + -3n2 = 0 -990 + N3 + 2n + -3n2 = 0 The solution to this equation could not be determined.
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