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Simplifying 2(a + -6) = -28 Reorder the terms: 2(-6 + a) = -28 (-6 * 2 + a * 2) = -28 (-12 + 2a) = -28 Solving -12 + 2a = -28 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 2a = -28 + 12 Combine like terms: -12 + 12 = 0 0 + 2a = -28 + 12 2a = -28 + 12 Combine like terms: -28 + 12 = -16 2a = -16 Divide each side by '2'. a = -8 Simplifying a = -8
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