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Simplifying ab + -9a + 9b + -81 = 0 Reorder the terms: -81 + -9a + ab + 9b = 0 Solving -81 + -9a + ab + 9b = 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 + -9a + ab + 81 + 9b = 0 + 81 Reorder the terms: -81 + 81 + -9a + ab + 9b = 0 + 81 Combine like terms: -81 + 81 = 0 0 + -9a + ab + 9b = 0 + 81 -9a + ab + 9b = 0 + 81 Combine like terms: 0 + 81 = 81 -9a + ab + 9b = 81 Add '-9b' to each side of the equation. -9a + ab + 9b + -9b = 81 + -9b Combine like terms: 9b + -9b = 0 -9a + ab + 0 = 81 + -9b -9a + ab = 81 + -9b Reorder the terms: -81 + -9a + ab + 9b = 81 + -9b + -81 + 9b Reorder the terms: -81 + -9a + ab + 9b = 81 + -81 + -9b + 9b Combine like terms: 81 + -81 = 0 -81 + -9a + ab + 9b = 0 + -9b + 9b -81 + -9a + ab + 9b = -9b + 9b Combine like terms: -9b + 9b = 0 -81 + -9a + ab + 9b = 0 The solution to this equation could not be determined.
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