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Simplifying 7(4r + 12) = 0 Reorder the terms: 7(12 + 4r) = 0 (12 * 7 + 4r * 7) = 0 (84 + 28r) = 0 Solving 84 + 28r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-84' to each side of the equation. 84 + -84 + 28r = 0 + -84 Combine like terms: 84 + -84 = 0 0 + 28r = 0 + -84 28r = 0 + -84 Combine like terms: 0 + -84 = -84 28r = -84 Divide each side by '28'. r = -3 Simplifying r = -3
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