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Simplifying 1.8r + 15 = -5.7r Reorder the terms: 15 + 1.8r = -5.7r Solving 15 + 1.8r = -5.7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '5.7r' to each side of the equation. 15 + 1.8r + 5.7r = -5.7r + 5.7r Combine like terms: 1.8r + 5.7r = 7.5r 15 + 7.5r = -5.7r + 5.7r Combine like terms: -5.7r + 5.7r = 0.0 15 + 7.5r = 0.0 Add '-15' to each side of the equation. 15 + -15 + 7.5r = 0.0 + -15 Combine like terms: 15 + -15 = 0 0 + 7.5r = 0.0 + -15 7.5r = 0.0 + -15 Combine like terms: 0.0 + -15 = -15 7.5r = -15 Divide each side by '7.5'. r = -2 Simplifying r = -2
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