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Simplifying 14a + 21 = 12a + -6 Reorder the terms: 21 + 14a = 12a + -6 Reorder the terms: 21 + 14a = -6 + 12a Solving 21 + 14a = -6 + 12a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12a' to each side of the equation. 21 + 14a + -12a = -6 + 12a + -12a Combine like terms: 14a + -12a = 2a 21 + 2a = -6 + 12a + -12a Combine like terms: 12a + -12a = 0 21 + 2a = -6 + 0 21 + 2a = -6 Add '-21' to each side of the equation. 21 + -21 + 2a = -6 + -21 Combine like terms: 21 + -21 = 0 0 + 2a = -6 + -21 2a = -6 + -21 Combine like terms: -6 + -21 = -27 2a = -27 Divide each side by '2'. a = -13.5 Simplifying a = -13.5
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