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Simplifying 1.8r + 8 = 1.5r + 20 Reorder the terms: 8 + 1.8r = 1.5r + 20 Reorder the terms: 8 + 1.8r = 20 + 1.5r Solving 8 + 1.8r = 20 + 1.5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1.5r' to each side of the equation. 8 + 1.8r + -1.5r = 20 + 1.5r + -1.5r Combine like terms: 1.8r + -1.5r = 0.3r 8 + 0.3r = 20 + 1.5r + -1.5r Combine like terms: 1.5r + -1.5r = 0.0 8 + 0.3r = 20 + 0.0 8 + 0.3r = 20 Add '-8' to each side of the equation. 8 + -8 + 0.3r = 20 + -8 Combine like terms: 8 + -8 = 0 0 + 0.3r = 20 + -8 0.3r = 20 + -8 Combine like terms: 20 + -8 = 12 0.3r = 12 Divide each side by '0.3'. r = 40 Simplifying r = 40
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