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Simplifying 12a = -2(a + -7) Reorder the terms: 12a = -2(-7 + a) 12a = (-7 * -2 + a * -2) 12a = (14 + -2a) Solving 12a = 14 + -2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2a' to each side of the equation. 12a + 2a = 14 + -2a + 2a Combine like terms: 12a + 2a = 14a 14a = 14 + -2a + 2a Combine like terms: -2a + 2a = 0 14a = 14 + 0 14a = 14 Divide each side by '14'. a = 1 Simplifying a = 1
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