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Simplifying 20 + a2 = 12 Solving 20 + a2 = 12 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + a2 = 12 + -20 Combine like terms: 20 + -20 = 0 0 + a2 = 12 + -20 a2 = 12 + -20 Combine like terms: 12 + -20 = -8 a2 = -8 Simplifying a2 = -8 Reorder the terms: 8 + a2 = -8 + 8 Combine like terms: -8 + 8 = 0 8 + a2 = 0 The solution to this equation could not be determined.
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