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Simplifying (n + 5) * x(n + -1) = 90 Reorder the terms: (5 + n) * x(n + -1) = 90 Reorder the terms: (5 + n) * x(-1 + n) = 90 Reorder the terms for easier multiplication: x(5 + n)(-1 + n) = 90 Multiply (5 + n) * (-1 + n) x(5(-1 + n) + n(-1 + n)) = 90 x((-1 * 5 + n * 5) + n(-1 + n)) = 90 x((-5 + 5n) + n(-1 + n)) = 90 x(-5 + 5n + (-1 * n + n * n)) = 90 x(-5 + 5n + (-1n + n2)) = 90 Combine like terms: 5n + -1n = 4n x(-5 + 4n + n2) = 90 (-5 * x + 4n * x + n2 * x) = 90 Reorder the terms: (4nx + n2x + -5x) = 90 (4nx + n2x + -5x) = 90 Solving 4nx + n2x + -5x = 90 Solving for variable 'n'. Reorder the terms: -90 + 4nx + n2x + -5x = 90 + -90 Combine like terms: 90 + -90 = 0 -90 + 4nx + n2x + -5x = 0 The solution to this equation could not be determined.
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