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Simplifying 9r + -28 = 2 + 3r Reorder the terms: -28 + 9r = 2 + 3r Solving -28 + 9r = 2 + 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. -28 + 9r + -3r = 2 + 3r + -3r Combine like terms: 9r + -3r = 6r -28 + 6r = 2 + 3r + -3r Combine like terms: 3r + -3r = 0 -28 + 6r = 2 + 0 -28 + 6r = 2 Add '28' to each side of the equation. -28 + 28 + 6r = 2 + 28 Combine like terms: -28 + 28 = 0 0 + 6r = 2 + 28 6r = 2 + 28 Combine like terms: 2 + 28 = 30 6r = 30 Divide each side by '6'. r = 5 Simplifying r = 5
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