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Simplifying 2(6 + -5r) = -8 (6 * 2 + -5r * 2) = -8 (12 + -10r) = -8 Solving 12 + -10r = -8 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -10r = -8 + -12 Combine like terms: 12 + -12 = 0 0 + -10r = -8 + -12 -10r = -8 + -12 Combine like terms: -8 + -12 = -20 -10r = -20 Divide each side by '-10'. r = 2 Simplifying r = 2
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