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