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Simplifying 8r + -5 + 7 = 12 Reorder the terms: -5 + 7 + 8r = 12 Combine like terms: -5 + 7 = 2 2 + 8r = 12 Solving 2 + 8r = 12 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 8r = 12 + -2 Combine like terms: 2 + -2 = 0 0 + 8r = 12 + -2 8r = 12 + -2 Combine like terms: 12 + -2 = 10 8r = 10 Divide each side by '8'. r = 1.25 Simplifying r = 1.25
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