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Simplifying 2r + 12 = 20r + -20 Reorder the terms: 12 + 2r = 20r + -20 Reorder the terms: 12 + 2r = -20 + 20r Solving 12 + 2r = -20 + 20r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-20r' to each side of the equation. 12 + 2r + -20r = -20 + 20r + -20r Combine like terms: 2r + -20r = -18r 12 + -18r = -20 + 20r + -20r Combine like terms: 20r + -20r = 0 12 + -18r = -20 + 0 12 + -18r = -20 Add '-12' to each side of the equation. 12 + -12 + -18r = -20 + -12 Combine like terms: 12 + -12 = 0 0 + -18r = -20 + -12 -18r = -20 + -12 Combine like terms: -20 + -12 = -32 -18r = -32 Divide each side by '-18'. r = 1.777777778 Simplifying r = 1.777777778
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