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Simplifying 25 = -9(3r + 8) Reorder the terms: 25 = -9(8 + 3r) 25 = (8 * -9 + 3r * -9) 25 = (-72 + -27r) Solving 25 = -72 + -27r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '27r' to each side of the equation. 25 + 27r = -72 + -27r + 27r Combine like terms: -27r + 27r = 0 25 + 27r = -72 + 0 25 + 27r = -72 Add '-25' to each side of the equation. 25 + -25 + 27r = -72 + -25 Combine like terms: 25 + -25 = 0 0 + 27r = -72 + -25 27r = -72 + -25 Combine like terms: -72 + -25 = -97 27r = -97 Divide each side by '27'. r = -3.592592593 Simplifying r = -3.592592593
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