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Simplifying -7(r + 12) + 3 = -25 Reorder the terms: -7(12 + r) + 3 = -25 (12 * -7 + r * -7) + 3 = -25 (-84 + -7r) + 3 = -25 Reorder the terms: -84 + 3 + -7r = -25 Combine like terms: -84 + 3 = -81 -81 + -7r = -25 Solving -81 + -7r = -25 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '81' to each side of the equation. -81 + 81 + -7r = -25 + 81 Combine like terms: -81 + 81 = 0 0 + -7r = -25 + 81 -7r = -25 + 81 Combine like terms: -25 + 81 = 56 -7r = 56 Divide each side by '-7'. r = -8 Simplifying r = -8
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