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Simplifying 1b + -7 + 8b = 28 Reorder the terms: -7 + 1b + 8b = 28 Combine like terms: 1b + 8b = 9b -7 + 9b = 28 Solving -7 + 9b = 28 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 9b = 28 + 7 Combine like terms: -7 + 7 = 0 0 + 9b = 28 + 7 9b = 28 + 7 Combine like terms: 28 + 7 = 35 9b = 35 Divide each side by '9'. b = 3.888888889 Simplifying b = 3.888888889
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