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Simplifying r + 6 + -8r = -1 + -8r Reorder the terms: 6 + r + -8r = -1 + -8r Combine like terms: r + -8r = -7r 6 + -7r = -1 + -8r Solving 6 + -7r = -1 + -8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8r' to each side of the equation. 6 + -7r + 8r = -1 + -8r + 8r Combine like terms: -7r + 8r = 1r 6 + 1r = -1 + -8r + 8r Combine like terms: -8r + 8r = 0 6 + 1r = -1 + 0 6 + 1r = -1 Add '-6' to each side of the equation. 6 + -6 + 1r = -1 + -6 Combine like terms: 6 + -6 = 0 0 + 1r = -1 + -6 1r = -1 + -6 Combine like terms: -1 + -6 = -7 1r = -7 Divide each side by '1'. r = -7 Simplifying r = -7
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