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Simplifying 7 = 21b Solving 7 = 21b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-21b' to each side of the equation. 7 + -21b = 21b + -21b Combine like terms: 21b + -21b = 0 7 + -21b = 0 Add '-7' to each side of the equation. 7 + -7 + -21b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -21b = 0 + -7 -21b = 0 + -7 Combine like terms: 0 + -7 = -7 -21b = -7 Divide each side by '-21'. b = 0.3333333333 Simplifying b = 0.3333333333
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