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Simplifying 8r + 1 = -1 Reorder the terms: 1 + 8r = -1 Solving 1 + 8r = -1 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 8r = -1 + -1 Combine like terms: 1 + -1 = 0 0 + 8r = -1 + -1 8r = -1 + -1 Combine like terms: -1 + -1 = -2 8r = -2 Divide each side by '8'. r = -0.25 Simplifying r = -0.25
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