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Simplifying 7b + 15 = 5b + 55 Reorder the terms: 15 + 7b = 5b + 55 Reorder the terms: 15 + 7b = 55 + 5b Solving 15 + 7b = 55 + 5b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-5b' to each side of the equation. 15 + 7b + -5b = 55 + 5b + -5b Combine like terms: 7b + -5b = 2b 15 + 2b = 55 + 5b + -5b Combine like terms: 5b + -5b = 0 15 + 2b = 55 + 0 15 + 2b = 55 Add '-15' to each side of the equation. 15 + -15 + 2b = 55 + -15 Combine like terms: 15 + -15 = 0 0 + 2b = 55 + -15 2b = 55 + -15 Combine like terms: 55 + -15 = 40 2b = 40 Divide each side by '2'. b = 20 Simplifying b = 20
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