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Simplifying 13 + -7r = 6r Solving 13 + -7r = 6r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6r' to each side of the equation. 13 + -7r + -6r = 6r + -6r Combine like terms: -7r + -6r = -13r 13 + -13r = 6r + -6r Combine like terms: 6r + -6r = 0 13 + -13r = 0 Add '-13' to each side of the equation. 13 + -13 + -13r = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -13r = 0 + -13 -13r = 0 + -13 Combine like terms: 0 + -13 = -13 -13r = -13 Divide each side by '-13'. r = 1 Simplifying r = 1
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