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Simplifying 15 = (6 + -1r) * 2 + 14 Reorder the terms for easier multiplication: 15 = 2(6 + -1r) + 14 15 = (6 * 2 + -1r * 2) + 14 15 = (12 + -2r) + 14 Reorder the terms: 15 = 12 + 14 + -2r Combine like terms: 12 + 14 = 26 15 = 26 + -2r Solving 15 = 26 + -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. 15 + 2r = 26 + -2r + 2r Combine like terms: -2r + 2r = 0 15 + 2r = 26 + 0 15 + 2r = 26 Add '-15' to each side of the equation. 15 + -15 + 2r = 26 + -15 Combine like terms: 15 + -15 = 0 0 + 2r = 26 + -15 2r = 26 + -15 Combine like terms: 26 + -15 = 11 2r = 11 Divide each side by '2'. r = 5.5 Simplifying r = 5.5
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