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Simplifying r + 5 = -13 + -2r Reorder the terms: 5 + r = -13 + -2r Solving 5 + r = -13 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. 5 + r + 2r = -13 + -2r + 2r Combine like terms: r + 2r = 3r 5 + 3r = -13 + -2r + 2r Combine like terms: -2r + 2r = 0 5 + 3r = -13 + 0 5 + 3r = -13 Add '-5' to each side of the equation. 5 + -5 + 3r = -13 + -5 Combine like terms: 5 + -5 = 0 0 + 3r = -13 + -5 3r = -13 + -5 Combine like terms: -13 + -5 = -18 3r = -18 Divide each side by '3'. r = -6 Simplifying r = -6
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