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Simplifying (b + 84) = 3b Reorder the terms: (84 + b) = 3b Remove parenthesis around (84 + b) 84 + b = 3b Solving 84 + b = 3b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-3b' to each side of the equation. 84 + b + -3b = 3b + -3b Combine like terms: b + -3b = -2b 84 + -2b = 3b + -3b Combine like terms: 3b + -3b = 0 84 + -2b = 0 Add '-84' to each side of the equation. 84 + -84 + -2b = 0 + -84 Combine like terms: 84 + -84 = 0 0 + -2b = 0 + -84 -2b = 0 + -84 Combine like terms: 0 + -84 = -84 -2b = -84 Divide each side by '-2'. b = 42 Simplifying b = 42
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