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Simplifying -10r = r2 + -10r + 12 Reorder the terms: -10r = 12 + -10r + r2 Add '10r' to each side of the equation. -10r + 10r = 12 + -10r + 10r + r2 Combine like terms: -10r + 10r = 0 0 = 12 + -10r + 10r + r2 Combine like terms: -10r + 10r = 0 0 = 12 + 0 + r2 0 = 12 + r2 Solving 0 = 12 + r2 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r2' to each side of the equation. 0 + -1r2 = 12 + r2 + -1r2 Remove the zero: -1r2 = 12 + r2 + -1r2 Combine like terms: r2 + -1r2 = 0 -1r2 = 12 + 0 -1r2 = 12 Divide each side by '-1'. r2 = -12 Simplifying r2 = -12 Reorder the terms: 12 + r2 = -12 + 12 Combine like terms: -12 + 12 = 0 12 + r2 = 0 The solution to this equation could not be determined.
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