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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 = 6 -13r = 6 Divide each side by '-13'. r = -0.4615384615 Simplifying r = -0.4615384615
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