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Simplifying 3r + 2 + 5 + 4r = 56 Reorder the terms: 2 + 5 + 3r + 4r = 56 Combine like terms: 2 + 5 = 7 7 + 3r + 4r = 56 Combine like terms: 3r + 4r = 7r 7 + 7r = 56 Solving 7 + 7r = 56 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 7r = 56 + -7 Combine like terms: 7 + -7 = 0 0 + 7r = 56 + -7 7r = 56 + -7 Combine like terms: 56 + -7 = 49 7r = 49 Divide each side by '7'. r = 7 Simplifying r = 7
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