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Simplifying 10n2 + 63a + 81 = 0 Reorder the terms: 81 + 63a + 10n2 = 0 Solving 81 + 63a + 10n2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + 63a + -81 + 10n2 = 0 + -81 Reorder the terms: 81 + -81 + 63a + 10n2 = 0 + -81 Combine like terms: 81 + -81 = 0 0 + 63a + 10n2 = 0 + -81 63a + 10n2 = 0 + -81 Combine like terms: 0 + -81 = -81 63a + 10n2 = -81 Add '-10n2' to each side of the equation. 63a + 10n2 + -10n2 = -81 + -10n2 Combine like terms: 10n2 + -10n2 = 0 63a + 0 = -81 + -10n2 63a = -81 + -10n2 Divide each side by '63'. a = -1.285714286 + -0.1587301587n2 Simplifying a = -1.285714286 + -0.1587301587n2
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