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Simplifying 12r = 52 + (4) 12r = 52 + 4 Combine like terms: 52 + 4 = 56 12r = 56 Solving 12r = 56 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Divide each side by '12'. r = 4.666666667 Simplifying r = 4.666666667
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