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Simplifying 12 + -1a2 = 40 Solving 12 + -1a2 = 40 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1a2 = 40 + -12 Combine like terms: 12 + -12 = 0 0 + -1a2 = 40 + -12 -1a2 = 40 + -12 Combine like terms: 40 + -12 = 28 -1a2 = 28 Divide each side by '-1'. a2 = -28 Simplifying a2 = -28 Reorder the terms: 28 + a2 = -28 + 28 Combine like terms: -28 + 28 = 0 28 + a2 = 0 The solution to this equation could not be determined.
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