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Simplifying 7r2 + 84 = -49 Reorder the terms: 84 + 7r2 = -49 Solving 84 + 7r2 = -49 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-84' to each side of the equation. 84 + -84 + 7r2 = -49 + -84 Combine like terms: 84 + -84 = 0 0 + 7r2 = -49 + -84 7r2 = -49 + -84 Combine like terms: -49 + -84 = -133 7r2 = -133 Divide each side by '7'. 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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