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Simplifying 6(-3r + 2) = 66 Reorder the terms: 6(2 + -3r) = 66 (2 * 6 + -3r * 6) = 66 (12 + -18r) = 66 Solving 12 + -18r = 66 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 + -18r = 66 + -12 Combine like terms: 12 + -12 = 0 0 + -18r = 66 + -12 -18r = 66 + -12 Combine like terms: 66 + -12 = 54 -18r = 54 Divide each side by '-18'. r = -3 Simplifying r = -3
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