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Simplifying An = 7 + (n + -1) * 15 Reorder the terms: nA = 7 + (-1 + n) * 15 Reorder the terms for easier multiplication: nA = 7 + 15(-1 + n) nA = 7 + (-1 * 15 + n * 15) nA = 7 + (-15 + 15n) Combine like terms: 7 + -15 = -8 nA = -8 + 15n Solving nA = -8 + 15n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-15n' to each side of the equation. -15n + nA = -8 + 15n + -15n Combine like terms: 15n + -15n = 0 -15n + nA = -8 + 0 -15n + nA = -8 Reorder the terms: 8 + -15n + nA = -8 + 8 Combine like terms: -8 + 8 = 0 8 + -15n + nA = 0 The solution to this equation could not be determined.
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