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Simplifying 9r + -2 = 4r + 9 Reorder the terms: -2 + 9r = 4r + 9 Reorder the terms: -2 + 9r = 9 + 4r Solving -2 + 9r = 9 + 4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4r' to each side of the equation. -2 + 9r + -4r = 9 + 4r + -4r Combine like terms: 9r + -4r = 5r -2 + 5r = 9 + 4r + -4r Combine like terms: 4r + -4r = 0 -2 + 5r = 9 + 0 -2 + 5r = 9 Add '2' to each side of the equation. -2 + 2 + 5r = 9 + 2 Combine like terms: -2 + 2 = 0 0 + 5r = 9 + 2 5r = 9 + 2 Combine like terms: 9 + 2 = 11 5r = 11 Divide each side by '5'. r = 2.2 Simplifying r = 2.2
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