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Simplifying 2r + 21r + 54 = 0 Reorder the terms: 54 + 2r + 21r = 0 Combine like terms: 2r + 21r = 23r 54 + 23r = 0 Solving 54 + 23r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-54' to each side of the equation. 54 + -54 + 23r = 0 + -54 Combine like terms: 54 + -54 = 0 0 + 23r = 0 + -54 23r = 0 + -54 Combine like terms: 0 + -54 = -54 23r = -54 Divide each side by '23'. r = -2.347826087 Simplifying r = -2.347826087
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