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Simplifying 72 = 6r Solving 72 = 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. 72 + -6r = 6r + -6r Combine like terms: 6r + -6r = 0 72 + -6r = 0 Add '-72' to each side of the equation. 72 + -72 + -6r = 0 + -72 Combine like terms: 72 + -72 = 0 0 + -6r = 0 + -72 -6r = 0 + -72 Combine like terms: 0 + -72 = -72 -6r = -72 Divide each side by '-6'. r = 12 Simplifying r = 12
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