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Simplifying 3r2 + 13 = 10 Reorder the terms: 13 + 3r2 = 10 Solving 13 + 3r2 = 10 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 3r2 = 10 + -13 Combine like terms: 13 + -13 = 0 0 + 3r2 = 10 + -13 3r2 = 10 + -13 Combine like terms: 10 + -13 = -3 3r2 = -3 Divide each side by '3'. r2 = -1 Simplifying r2 = -1 Reorder the terms: 1 + r2 = -1 + 1 Combine like terms: -1 + 1 = 0 1 + r2 = 0 The solution to this equation could not be determined.
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