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Simplifying 28 = 7r Solving 28 = 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. 28 + -7r = 7r + -7r Combine like terms: 7r + -7r = 0 28 + -7r = 0 Add '-28' to each side of the equation. 28 + -28 + -7r = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -7r = 0 + -28 -7r = 0 + -28 Combine like terms: 0 + -28 = -28 -7r = -28 Divide each side by '-7'. r = 4 Simplifying r = 4
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