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Simplifying 8r + 4 = 28 Reorder the terms: 4 + 8r = 28 Solving 4 + 8r = 28 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 8r = 28 + -4 Combine like terms: 4 + -4 = 0 0 + 8r = 28 + -4 8r = 28 + -4 Combine like terms: 28 + -4 = 24 8r = 24 Divide each side by '8'. r = 3 Simplifying r = 3
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