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Simplifying 7r + -9 = 16 + 2r Reorder the terms: -9 + 7r = 16 + 2r Solving -9 + 7r = 16 + 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 + 7r + -2r = 16 + 2r + -2r Combine like terms: 7r + -2r = 5r -9 + 5r = 16 + 2r + -2r Combine like terms: 2r + -2r = 0 -9 + 5r = 16 + 0 -9 + 5r = 16 Add '9' to each side of the equation. -9 + 9 + 5r = 16 + 9 Combine like terms: -9 + 9 = 0 0 + 5r = 16 + 9 5r = 16 + 9 Combine like terms: 16 + 9 = 25 5r = 25 Divide each side by '5'. r = 5 Simplifying r = 5
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