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Simplifying (4a2 + -6a + 7) + (6a + -23 + -9a2) = 0 Reorder the terms: (7 + -6a + 4a2) + (6a + -23 + -9a2) = 0 Remove parenthesis around (7 + -6a + 4a2) 7 + -6a + 4a2 + (6a + -23 + -9a2) = 0 Reorder the terms: 7 + -6a + 4a2 + (-23 + 6a + -9a2) = 0 Remove parenthesis around (-23 + 6a + -9a2) 7 + -6a + 4a2 + -23 + 6a + -9a2 = 0 Reorder the terms: 7 + -23 + -6a + 6a + 4a2 + -9a2 = 0 Combine like terms: 7 + -23 = -16 -16 + -6a + 6a + 4a2 + -9a2 = 0 Combine like terms: -6a + 6a = 0 -16 + 0 + 4a2 + -9a2 = 0 -16 + 4a2 + -9a2 = 0 Combine like terms: 4a2 + -9a2 = -5a2 -16 + -5a2 = 0 Solving -16 + -5a2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + -5a2 = 0 + 16 Combine like terms: -16 + 16 = 0 0 + -5a2 = 0 + 16 -5a2 = 0 + 16 Combine like terms: 0 + 16 = 16 -5a2 = 16 Divide each side by '-5'. a2 = -3.2 Simplifying a2 = -3.2 Reorder the terms: 3.2 + a2 = -3.2 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 3.2 + a2 = 0.0 The solution to this equation could not be determined.
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