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Simplifying 21 + 21b = 35 + 14b Solving 21 + 21b = 35 + 14b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-14b' to each side of the equation. 21 + 21b + -14b = 35 + 14b + -14b Combine like terms: 21b + -14b = 7b 21 + 7b = 35 + 14b + -14b Combine like terms: 14b + -14b = 0 21 + 7b = 35 + 0 21 + 7b = 35 Add '-21' to each side of the equation. 21 + -21 + 7b = 35 + -21 Combine like terms: 21 + -21 = 0 0 + 7b = 35 + -21 7b = 35 + -21 Combine like terms: 35 + -21 = 14 7b = 14 Divide each side by '7'. b = 2 Simplifying b = 2
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