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Simplifying 12 + 8a = 3a + -3 Reorder the terms: 12 + 8a = -3 + 3a Solving 12 + 8a = -3 + 3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. 12 + 8a + -3a = -3 + 3a + -3a Combine like terms: 8a + -3a = 5a 12 + 5a = -3 + 3a + -3a Combine like terms: 3a + -3a = 0 12 + 5a = -3 + 0 12 + 5a = -3 Add '-12' to each side of the equation. 12 + -12 + 5a = -3 + -12 Combine like terms: 12 + -12 = 0 0 + 5a = -3 + -12 5a = -3 + -12 Combine like terms: -3 + -12 = -15 5a = -15 Divide each side by '5'. a = -3 Simplifying a = -3
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