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Simplifying 12a + -9ab + 5b + -3 + -1(4a + -7ab + 3b + 12) = 0 Reorder the terms: 12a + -9ab + 5b + -3 + -1(12 + 4a + -7ab + 3b) = 0 12a + -9ab + 5b + -3 + (12 * -1 + 4a * -1 + -7ab * -1 + 3b * -1) = 0 12a + -9ab + 5b + -3 + (-12 + -4a + 7ab + -3b) = 0 Reorder the terms: -3 + -12 + 12a + -4a + -9ab + 7ab + 5b + -3b = 0 Combine like terms: -3 + -12 = -15 -15 + 12a + -4a + -9ab + 7ab + 5b + -3b = 0 Combine like terms: 12a + -4a = 8a -15 + 8a + -9ab + 7ab + 5b + -3b = 0 Combine like terms: -9ab + 7ab = -2ab -15 + 8a + -2ab + 5b + -3b = 0 Combine like terms: 5b + -3b = 2b -15 + 8a + -2ab + 2b = 0 Solving -15 + 8a + -2ab + 2b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 8a + -2ab + 15 + 2b = 0 + 15 Reorder the terms: -15 + 15 + 8a + -2ab + 2b = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 8a + -2ab + 2b = 0 + 15 8a + -2ab + 2b = 0 + 15 Combine like terms: 0 + 15 = 15 8a + -2ab + 2b = 15 Add '-2b' to each side of the equation. 8a + -2ab + 2b + -2b = 15 + -2b Combine like terms: 2b + -2b = 0 8a + -2ab + 0 = 15 + -2b 8a + -2ab = 15 + -2b Reorder the terms: -15 + 8a + -2ab + 2b = 15 + -2b + -15 + 2b Reorder the terms: -15 + 8a + -2ab + 2b = 15 + -15 + -2b + 2b Combine like terms: 15 + -15 = 0 -15 + 8a + -2ab + 2b = 0 + -2b + 2b -15 + 8a + -2ab + 2b = -2b + 2b Combine like terms: -2b + 2b = 0 -15 + 8a + -2ab + 2b = 0 The solution to this equation could not be determined.
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