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Simplifying 0 = 5b + 21 Reorder the terms: 0 = 21 + 5b Solving 0 = 21 + 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. 0 + -5b = 21 + 5b + -5b Remove the zero: -5b = 21 + 5b + -5b Combine like terms: 5b + -5b = 0 -5b = 21 + 0 -5b = 21 Divide each side by '-5'. b = -4.2 Simplifying b = -4.2
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