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Simplifying r = 2(r + -1) + 5 Reorder the terms: r = 2(-1 + r) + 5 r = (-1 * 2 + r * 2) + 5 r = (-2 + 2r) + 5 Reorder the terms: r = -2 + 5 + 2r Combine like terms: -2 + 5 = 3 r = 3 + 2r Solving r = 3 + 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. r + -2r = 3 + 2r + -2r Combine like terms: r + -2r = -1r -1r = 3 + 2r + -2r Combine like terms: 2r + -2r = 0 -1r = 3 + 0 -1r = 3 Divide each side by '-1'. r = -3 Simplifying r = -3
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