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Simplifying 2 + -3a = 7a + 12 Reorder the terms: 2 + -3a = 12 + 7a Solving 2 + -3a = 12 + 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. 2 + -3a + -7a = 12 + 7a + -7a Combine like terms: -3a + -7a = -10a 2 + -10a = 12 + 7a + -7a Combine like terms: 7a + -7a = 0 2 + -10a = 12 + 0 2 + -10a = 12 Add '-2' to each side of the equation. 2 + -2 + -10a = 12 + -2 Combine like terms: 2 + -2 = 0 0 + -10a = 12 + -2 -10a = 12 + -2 Combine like terms: 12 + -2 = 10 -10a = 10 Divide each side by '-10'. a = -1 Simplifying a = -1
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