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Simplifying 12ab + -9a + -20b + 15 = 0 Reorder the terms: 15 + -9a + 12ab + -20b = 0 Solving 15 + -9a + 12ab + -20b = 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 + -9a + 12ab + -15 + -20b = 0 + -15 Reorder the terms: 15 + -15 + -9a + 12ab + -20b = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -9a + 12ab + -20b = 0 + -15 -9a + 12ab + -20b = 0 + -15 Combine like terms: 0 + -15 = -15 -9a + 12ab + -20b = -15 Add '20b' to each side of the equation. -9a + 12ab + -20b + 20b = -15 + 20b Combine like terms: -20b + 20b = 0 -9a + 12ab + 0 = -15 + 20b -9a + 12ab = -15 + 20b Reorder the terms: 15 + -9a + 12ab + -20b = -15 + 20b + 15 + -20b Reorder the terms: 15 + -9a + 12ab + -20b = -15 + 15 + 20b + -20b Combine like terms: -15 + 15 = 0 15 + -9a + 12ab + -20b = 0 + 20b + -20b 15 + -9a + 12ab + -20b = 20b + -20b Combine like terms: 20b + -20b = 0 15 + -9a + 12ab + -20b = 0 The solution to this equation could not be determined.
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