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Simplifying -3(-7b + -2) = -99 Reorder the terms: -3(-2 + -7b) = -99 (-2 * -3 + -7b * -3) = -99 (6 + 21b) = -99 Solving 6 + 21b = -99 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + 21b = -99 + -6 Combine like terms: 6 + -6 = 0 0 + 21b = -99 + -6 21b = -99 + -6 Combine like terms: -99 + -6 = -105 21b = -105 Divide each side by '21'. b = -5 Simplifying b = -5
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