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Simplifying 2r + -14 = 7 + 9r Reorder the terms: -14 + 2r = 7 + 9r Solving -14 + 2r = 7 + 9r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-9r' to each side of the equation. -14 + 2r + -9r = 7 + 9r + -9r Combine like terms: 2r + -9r = -7r -14 + -7r = 7 + 9r + -9r Combine like terms: 9r + -9r = 0 -14 + -7r = 7 + 0 -14 + -7r = 7 Add '14' to each side of the equation. -14 + 14 + -7r = 7 + 14 Combine like terms: -14 + 14 = 0 0 + -7r = 7 + 14 -7r = 7 + 14 Combine like terms: 7 + 14 = 21 -7r = 21 Divide each side by '-7'. r = -3 Simplifying r = -3
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