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Simplifying 4r2 + -1 = -28 Reorder the terms: -1 + 4r2 = -28 Solving -1 + 4r2 = -28 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 4r2 = -28 + 1 Combine like terms: -1 + 1 = 0 0 + 4r2 = -28 + 1 4r2 = -28 + 1 Combine like terms: -28 + 1 = -27 4r2 = -27 Divide each side by '4'. r2 = -6.75 Simplifying r2 = -6.75 Reorder the terms: 6.75 + r2 = -6.75 + 6.75 Combine like terms: -6.75 + 6.75 = 0.00 6.75 + r2 = 0.00 The solution to this equation could not be determined.
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