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Simplifying r + 3 = 5r + 9 Reorder the terms: 3 + r = 5r + 9 Reorder the terms: 3 + r = 9 + 5r Solving 3 + r = 9 + 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. 3 + r + -5r = 9 + 5r + -5r Combine like terms: r + -5r = -4r 3 + -4r = 9 + 5r + -5r Combine like terms: 5r + -5r = 0 3 + -4r = 9 + 0 3 + -4r = 9 Add '-3' to each side of the equation. 3 + -3 + -4r = 9 + -3 Combine like terms: 3 + -3 = 0 0 + -4r = 9 + -3 -4r = 9 + -3 Combine like terms: 9 + -3 = 6 -4r = 6 Divide each side by '-4'. r = -1.5 Simplifying r = -1.5
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