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Simplifying r + 12 = 6 + -4r Reorder the terms: 12 + r = 6 + -4r Solving 12 + r = 6 + -4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4r' to each side of the equation. 12 + r + 4r = 6 + -4r + 4r Combine like terms: r + 4r = 5r 12 + 5r = 6 + -4r + 4r Combine like terms: -4r + 4r = 0 12 + 5r = 6 + 0 12 + 5r = 6 Add '-12' to each side of the equation. 12 + -12 + 5r = 6 + -12 Combine like terms: 12 + -12 = 0 0 + 5r = 6 + -12 5r = 6 + -12 Combine like terms: 6 + -12 = -6 5r = -6 Divide each side by '5'. r = -1.2 Simplifying r = -1.2
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