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Simplifying -7b = -9 + -8b Solving -7b = -9 + -8b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '8b' to each side of the equation. -7b + 8b = -9 + -8b + 8b Combine like terms: -7b + 8b = 1b 1b = -9 + -8b + 8b Combine like terms: -8b + 8b = 0 1b = -9 + 0 1b = -9 Divide each side by '1'. b = -9 Simplifying b = -9
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