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