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Simplifying 4 + 12a = -12 + -8a Solving 4 + 12a = -12 + -8a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '8a' to each side of the equation. 4 + 12a + 8a = -12 + -8a + 8a Combine like terms: 12a + 8a = 20a 4 + 20a = -12 + -8a + 8a Combine like terms: -8a + 8a = 0 4 + 20a = -12 + 0 4 + 20a = -12 Add '-4' to each side of the equation. 4 + -4 + 20a = -12 + -4 Combine like terms: 4 + -4 = 0 0 + 20a = -12 + -4 20a = -12 + -4 Combine like terms: -12 + -4 = -16 20a = -16 Divide each side by '20'. a = -0.8 Simplifying a = -0.8
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