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Simplifying -6(2 + a) = -39 + 3a (2 * -6 + a * -6) = -39 + 3a (-12 + -6a) = -39 + 3a Solving -12 + -6a = -39 + 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 + -6a + -3a = -39 + 3a + -3a Combine like terms: -6a + -3a = -9a -12 + -9a = -39 + 3a + -3a Combine like terms: 3a + -3a = 0 -12 + -9a = -39 + 0 -12 + -9a = -39 Add '12' to each side of the equation. -12 + 12 + -9a = -39 + 12 Combine like terms: -12 + 12 = 0 0 + -9a = -39 + 12 -9a = -39 + 12 Combine like terms: -39 + 12 = -27 -9a = -27 Divide each side by '-9'. a = 3 Simplifying a = 3
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