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Simplifying -4(b + 13) = -12 Reorder the terms: -4(13 + b) = -12 (13 * -4 + b * -4) = -12 (-52 + -4b) = -12 Solving -52 + -4b = -12 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '52' to each side of the equation. -52 + 52 + -4b = -12 + 52 Combine like terms: -52 + 52 = 0 0 + -4b = -12 + 52 -4b = -12 + 52 Combine like terms: -12 + 52 = 40 -4b = 40 Divide each side by '-4'. b = -10 Simplifying b = -10
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