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Simplifying b + -3 + 7b = 20 Reorder the terms: -3 + b + 7b = 20 Combine like terms: b + 7b = 8b -3 + 8b = 20 Solving -3 + 8b = 20 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 = 20 + 3 Combine like terms: -3 + 3 = 0 0 + 8b = 20 + 3 8b = 20 + 3 Combine like terms: 20 + 3 = 23 8b = 23 Divide each side by '8'. b = 2.875 Simplifying b = 2.875
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