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Simplifying -7(r2 + 2) + 3r2 = 0 Reorder the terms: -7(2 + r2) + 3r2 = 0 (2 * -7 + r2 * -7) + 3r2 = 0 (-14 + -7r2) + 3r2 = 0 Combine like terms: -7r2 + 3r2 = -4r2 -14 + -4r2 = 0 Solving -14 + -4r2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -4r2 = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -4r2 = 0 + 14 -4r2 = 0 + 14 Combine like terms: 0 + 14 = 14 -4r2 = 14 Divide each side by '-4'. r2 = -3.5 Simplifying r2 = -3.5 Reorder the terms: 3.5 + r2 = -3.5 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 3.5 + r2 = 0.0 The solution to this equation could not be determined.
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