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Simplifying 3(a + -2) + 2a = -81 Reorder the terms: 3(-2 + a) + 2a = -81 (-2 * 3 + a * 3) + 2a = -81 (-6 + 3a) + 2a = -81 Combine like terms: 3a + 2a = 5a -6 + 5a = -81 Solving -6 + 5a = -81 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 5a = -81 + 6 Combine like terms: -6 + 6 = 0 0 + 5a = -81 + 6 5a = -81 + 6 Combine like terms: -81 + 6 = -75 5a = -75 Divide each side by '5'. a = -15 Simplifying a = -15
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