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Simplifying 8(8r + 7) = 0 Reorder the terms: 8(7 + 8r) = 0 (7 * 8 + 8r * 8) = 0 (56 + 64r) = 0 Solving 56 + 64r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-56' to each side of the equation. 56 + -56 + 64r = 0 + -56 Combine like terms: 56 + -56 = 0 0 + 64r = 0 + -56 64r = 0 + -56 Combine like terms: 0 + -56 = -56 64r = -56 Divide each side by '64'. r = -0.875 Simplifying r = -0.875
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