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Simplifying a(n) = -8 + (n + -1) * 7 Multiply a * n an = -8 + (n + -1) * 7 Reorder the terms: an = -8 + (-1 + n) * 7 Reorder the terms for easier multiplication: an = -8 + 7(-1 + n) an = -8 + (-1 * 7 + n * 7) an = -8 + (-7 + 7n) Combine like terms: -8 + -7 = -15 an = -15 + 7n Solving an = -15 + 7n Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Divide each side by 'n'. a = -15n-1 + 7 Simplifying a = -15n-1 + 7 Reorder the terms: a = 7 + -15n-1
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