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Simplifying 2 + -2r + 1 = 11 Reorder the terms: 2 + 1 + -2r = 11 Combine like terms: 2 + 1 = 3 3 + -2r = 11 Solving 3 + -2r = 11 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2r = 11 + -3 Combine like terms: 3 + -3 = 0 0 + -2r = 11 + -3 -2r = 11 + -3 Combine like terms: 11 + -3 = 8 -2r = 8 Divide each side by '-2'. r = -4 Simplifying r = -4
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