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Simplifying 6r + -6 = 3r + -9 Reorder the terms: -6 + 6r = 3r + -9 Reorder the terms: -6 + 6r = -9 + 3r Solving -6 + 6r = -9 + 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. -6 + 6r + -3r = -9 + 3r + -3r Combine like terms: 6r + -3r = 3r -6 + 3r = -9 + 3r + -3r Combine like terms: 3r + -3r = 0 -6 + 3r = -9 + 0 -6 + 3r = -9 Add '6' to each side of the equation. -6 + 6 + 3r = -9 + 6 Combine like terms: -6 + 6 = 0 0 + 3r = -9 + 6 3r = -9 + 6 Combine like terms: -9 + 6 = -3 3r = -3 Divide each side by '3'. r = -1 Simplifying r = -1
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