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Simplifying 11 = 1 + -7r + 3 Reorder the terms: 11 = 1 + 3 + -7r Combine like terms: 1 + 3 = 4 11 = 4 + -7r Solving 11 = 4 + -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. 11 + 7r = 4 + -7r + 7r Combine like terms: -7r + 7r = 0 11 + 7r = 4 + 0 11 + 7r = 4 Add '-11' to each side of the equation. 11 + -11 + 7r = 4 + -11 Combine like terms: 11 + -11 = 0 0 + 7r = 4 + -11 7r = 4 + -11 Combine like terms: 4 + -11 = -7 7r = -7 Divide each side by '7'. r = -1 Simplifying r = -1
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