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Simplifying 7r + 7 = 42 Reorder the terms: 7 + 7r = 42 Solving 7 + 7r = 42 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 = 42 + -7 Combine like terms: 7 + -7 = 0 0 + 7r = 42 + -7 7r = 42 + -7 Combine like terms: 42 + -7 = 35 7r = 35 Divide each side by '7'. r = 5 Simplifying r = 5
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