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Simplifying 4(a + 7) + a(9a + -4) = 0 Reorder the terms: 4(7 + a) + a(9a + -4) = 0 (7 * 4 + a * 4) + a(9a + -4) = 0 (28 + 4a) + a(9a + -4) = 0 Reorder the terms: 28 + 4a + a(-4 + 9a) = 0 28 + 4a + (-4 * a + 9a * a) = 0 28 + 4a + (-4a + 9a2) = 0 Combine like terms: 4a + -4a = 0 28 + 0 + 9a2 = 0 28 + 9a2 = 0 Solving 28 + 9a2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 9a2 = 0 + -28 Combine like terms: 28 + -28 = 0 0 + 9a2 = 0 + -28 9a2 = 0 + -28 Combine like terms: 0 + -28 = -28 9a2 = -28 Divide each side by '9'. a2 = -3.111111111 Simplifying a2 = -3.111111111 Reorder the terms: 3.111111111 + a2 = -3.111111111 + 3.111111111 Combine like terms: -3.111111111 + 3.111111111 = 0.000000000 3.111111111 + a2 = 0.000000000 The solution to this equation could not be determined.
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