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Simplifying 3(3 + -1r) = 2r + 5 (3 * 3 + -1r * 3) = 2r + 5 (9 + -3r) = 2r + 5 Reorder the terms: 9 + -3r = 5 + 2r Solving 9 + -3r = 5 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. 9 + -3r + -2r = 5 + 2r + -2r Combine like terms: -3r + -2r = -5r 9 + -5r = 5 + 2r + -2r Combine like terms: 2r + -2r = 0 9 + -5r = 5 + 0 9 + -5r = 5 Add '-9' to each side of the equation. 9 + -9 + -5r = 5 + -9 Combine like terms: 9 + -9 = 0 0 + -5r = 5 + -9 -5r = 5 + -9 Combine like terms: 5 + -9 = -4 -5r = -4 Divide each side by '-5'. r = 0.8 Simplifying r = 0.8
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