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Simplifying 12 + 7r = 5r Solving 12 + 7r = 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. 12 + 7r + -5r = 5r + -5r Combine like terms: 7r + -5r = 2r 12 + 2r = 5r + -5r Combine like terms: 5r + -5r = 0 12 + 2r = 0 Add '-12' to each side of the equation. 12 + -12 + 2r = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 2r = 0 + -12 2r = 0 + -12 Combine like terms: 0 + -12 = -12 2r = -12 Divide each side by '2'. r = -6 Simplifying r = -6
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