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Simplifying 4.5 + 1.5r = 18 + -3r Solving 4.5 + 1.5r = 18 + -3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3r' to each side of the equation. 4.5 + 1.5r + 3r = 18 + -3r + 3r Combine like terms: 1.5r + 3r = 4.5r 4.5 + 4.5r = 18 + -3r + 3r Combine like terms: -3r + 3r = 0 4.5 + 4.5r = 18 + 0 4.5 + 4.5r = 18 Add '-4.5' to each side of the equation. 4.5 + -4.5 + 4.5r = 18 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + 4.5r = 18 + -4.5 4.5r = 18 + -4.5 Combine like terms: 18 + -4.5 = 13.5 4.5r = 13.5 Divide each side by '4.5'. r = 3 Simplifying r = 3
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