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Simplifying 4r + 8 = 12 + -2r Reorder the terms: 8 + 4r = 12 + -2r Solving 8 + 4r = 12 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. 8 + 4r + 2r = 12 + -2r + 2r Combine like terms: 4r + 2r = 6r 8 + 6r = 12 + -2r + 2r Combine like terms: -2r + 2r = 0 8 + 6r = 12 + 0 8 + 6r = 12 Add '-8' to each side of the equation. 8 + -8 + 6r = 12 + -8 Combine like terms: 8 + -8 = 0 0 + 6r = 12 + -8 6r = 12 + -8 Combine like terms: 12 + -8 = 4 6r = 4 Divide each side by '6'. r = 0.6666666667 Simplifying r = 0.6666666667
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