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Simplifying 81c + 72b + 81a = 0 Reorder the terms: 81a + 72b + 81c = 0 Solving 81a + 72b + 81c = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-72b' to each side of the equation. 81a + 72b + -72b + 81c = 0 + -72b Combine like terms: 72b + -72b = 0 81a + 0 + 81c = 0 + -72b 81a + 81c = 0 + -72b Remove the zero: 81a + 81c = -72b Add '-81c' to each side of the equation. 81a + 81c + -81c = -72b + -81c Combine like terms: 81c + -81c = 0 81a + 0 = -72b + -81c 81a = -72b + -81c Divide each side by '81'. a = -0.8888888889b + -1c Simplifying a = -0.8888888889b + -1c
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