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Simplifying 8 = 23 + -5r Solving 8 = 23 + -5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '5r' to each side of the equation. 8 + 5r = 23 + -5r + 5r Combine like terms: -5r + 5r = 0 8 + 5r = 23 + 0 8 + 5r = 23 Add '-8' to each side of the equation. 8 + -8 + 5r = 23 + -8 Combine like terms: 8 + -8 = 0 0 + 5r = 23 + -8 5r = 23 + -8 Combine like terms: 23 + -8 = 15 5r = 15 Divide each side by '5'. r = 3 Simplifying r = 3
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