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Simplifying 3b * 3 + -1b + -3 = 81 Reorder the terms for easier multiplication: 3 * 3b + -1b + -3 = 81 Multiply 3 * 3 9b + -1b + -3 = 81 Reorder the terms: -3 + 9b + -1b = 81 Combine like terms: 9b + -1b = 8b -3 + 8b = 81 Solving -3 + 8b = 81 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 8b = 81 + 3 Combine like terms: -3 + 3 = 0 0 + 8b = 81 + 3 8b = 81 + 3 Combine like terms: 81 + 3 = 84 8b = 84 Divide each side by '8'. b = 10.5 Simplifying b = 10.5
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