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Simplifying 2b + -4 = 9 Reorder the terms: -4 + 2b = 9 Solving -4 + 2b = 9 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 2b = 9 + 4 Combine like terms: -4 + 4 = 0 0 + 2b = 9 + 4 2b = 9 + 4 Combine like terms: 9 + 4 = 13 2b = 13 Divide each side by '2'. b = 6.5 Simplifying b = 6.5
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