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Simplifying 13r + 11 = 15r + -3 Reorder the terms: 11 + 13r = 15r + -3 Reorder the terms: 11 + 13r = -3 + 15r Solving 11 + 13r = -3 + 15r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-15r' to each side of the equation. 11 + 13r + -15r = -3 + 15r + -15r Combine like terms: 13r + -15r = -2r 11 + -2r = -3 + 15r + -15r Combine like terms: 15r + -15r = 0 11 + -2r = -3 + 0 11 + -2r = -3 Add '-11' to each side of the equation. 11 + -11 + -2r = -3 + -11 Combine like terms: 11 + -11 = 0 0 + -2r = -3 + -11 -2r = -3 + -11 Combine like terms: -3 + -11 = -14 -2r = -14 Divide each side by '-2'. r = 7 Simplifying r = 7
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