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Simplifying 18 = 3(2r + 2) Reorder the terms: 18 = 3(2 + 2r) 18 = (2 * 3 + 2r * 3) 18 = (6 + 6r) Solving 18 = 6 + 6r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6r' to each side of the equation. 18 + -6r = 6 + 6r + -6r Combine like terms: 6r + -6r = 0 18 + -6r = 6 + 0 18 + -6r = 6 Add '-18' to each side of the equation. 18 + -18 + -6r = 6 + -18 Combine like terms: 18 + -18 = 0 0 + -6r = 6 + -18 -6r = 6 + -18 Combine like terms: 6 + -18 = -12 -6r = -12 Divide each side by '-6'. r = 2 Simplifying r = 2
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