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Simplifying 56 = 7 + -7r Solving 56 = 7 + -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. 56 + 7r = 7 + -7r + 7r Combine like terms: -7r + 7r = 0 56 + 7r = 7 + 0 56 + 7r = 7 Add '-56' to each side of the equation. 56 + -56 + 7r = 7 + -56 Combine like terms: 56 + -56 = 0 0 + 7r = 7 + -56 7r = 7 + -56 Combine like terms: 7 + -56 = -49 7r = -49 Divide each side by '7'. r = -7 Simplifying r = -7
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