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Simplifying (-2 + b) * 4 = 12 Reorder the terms for easier multiplication: 4(-2 + b) = 12 (-2 * 4 + b * 4) = 12 (-8 + 4b) = 12 Solving -8 + 4b = 12 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 4b = 12 + 8 Combine like terms: -8 + 8 = 0 0 + 4b = 12 + 8 4b = 12 + 8 Combine like terms: 12 + 8 = 20 4b = 20 Divide each side by '4'. b = 5 Simplifying b = 5
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