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Simplifying -7(8b + 7) = -105 Reorder the terms: -7(7 + 8b) = -105 (7 * -7 + 8b * -7) = -105 (-49 + -56b) = -105 Solving -49 + -56b = -105 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '49' to each side of the equation. -49 + 49 + -56b = -105 + 49 Combine like terms: -49 + 49 = 0 0 + -56b = -105 + 49 -56b = -105 + 49 Combine like terms: -105 + 49 = -56 -56b = -56 Divide each side by '-56'. b = 1 Simplifying b = 1
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