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Simplifying -3(a + 9) = -6 Reorder the terms: -3(9 + a) = -6 (9 * -3 + a * -3) = -6 (-27 + -3a) = -6 Solving -27 + -3a = -6 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '27' to each side of the equation. -27 + 27 + -3a = -6 + 27 Combine like terms: -27 + 27 = 0 0 + -3a = -6 + 27 -3a = -6 + 27 Combine like terms: -6 + 27 = 21 -3a = 21 Divide each side by '-3'. a = -7 Simplifying a = -7
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