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Simplifying -12r + 11 = -13r Reorder the terms: 11 + -12r = -13r Solving 11 + -12r = -13r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '13r' to each side of the equation. 11 + -12r + 13r = -13r + 13r Combine like terms: -12r + 13r = 1r 11 + 1r = -13r + 13r Combine like terms: -13r + 13r = 0 11 + 1r = 0 Add '-11' to each side of the equation. 11 + -11 + 1r = 0 + -11 Combine like terms: 11 + -11 = 0 0 + 1r = 0 + -11 1r = 0 + -11 Combine like terms: 0 + -11 = -11 1r = -11 Divide each side by '1'. r = -11 Simplifying r = -11
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