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Simplifying 6r + -7 = 13 + -7r Reorder the terms: -7 + 6r = 13 + -7r Solving -7 + 6r = 13 + -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. -7 + 6r + 7r = 13 + -7r + 7r Combine like terms: 6r + 7r = 13r -7 + 13r = 13 + -7r + 7r Combine like terms: -7r + 7r = 0 -7 + 13r = 13 + 0 -7 + 13r = 13 Add '7' to each side of the equation. -7 + 7 + 13r = 13 + 7 Combine like terms: -7 + 7 = 0 0 + 13r = 13 + 7 13r = 13 + 7 Combine like terms: 13 + 7 = 20 13r = 20 Divide each side by '13'. r = 1.538461538 Simplifying r = 1.538461538
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