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Simplifying -8r + -2 + 7 = 23 Reorder the terms: -2 + 7 + -8r = 23 Combine like terms: -2 + 7 = 5 5 + -8r = 23 Solving 5 + -8r = 23 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -8r = 23 + -5 Combine like terms: 5 + -5 = 0 0 + -8r = 23 + -5 -8r = 23 + -5 Combine like terms: 23 + -5 = 18 -8r = 18 Divide each side by '-8'. r = -2.25 Simplifying r = -2.25
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