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Simplifying r2 + 7 + 12 = 0 Reorder the terms: 7 + 12 + r2 = 0 Combine like terms: 7 + 12 = 19 19 + r2 = 0 Solving 19 + r2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + r2 = 0 + -19 Combine like terms: 19 + -19 = 0 0 + r2 = 0 + -19 r2 = 0 + -19 Combine like terms: 0 + -19 = -19 r2 = -19 Simplifying r2 = -19 Reorder the terms: 19 + r2 = -19 + 19 Combine like terms: -19 + 19 = 0 19 + r2 = 0 The solution to this equation could not be determined.
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