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Simplifying 9r2 + 4 = 0 Reorder the terms: 4 + 9r2 = 0 Solving 4 + 9r2 = 0 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 + 9r2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9r2 = 0 + -4 9r2 = 0 + -4 Combine like terms: 0 + -4 = -4 9r2 = -4 Divide each side by '9'. r2 = -0.4444444444 Simplifying r2 = -0.4444444444 Reorder the terms: 0.4444444444 + r2 = -0.4444444444 + 0.4444444444 Combine like terms: -0.4444444444 + 0.4444444444 = 0.0000000000 0.4444444444 + r2 = 0.0000000000 The solution to this equation could not be determined.
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