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Simplifying r2 + -4 = -8 Reorder the terms: -4 + r2 = -8 Solving -4 + r2 = -8 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + r2 = -8 + 4 Combine like terms: -4 + 4 = 0 0 + r2 = -8 + 4 r2 = -8 + 4 Combine like terms: -8 + 4 = -4 r2 = -4 Simplifying r2 = -4 Reorder the terms: 4 + r2 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + r2 = 0 The solution to this equation could not be determined.
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