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Simplifying 2 + -2r + 4 = -8 + -4r Reorder the terms: 2 + 4 + -2r = -8 + -4r Combine like terms: 2 + 4 = 6 6 + -2r = -8 + -4r Solving 6 + -2r = -8 + -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. 6 + -2r + 4r = -8 + -4r + 4r Combine like terms: -2r + 4r = 2r 6 + 2r = -8 + -4r + 4r Combine like terms: -4r + 4r = 0 6 + 2r = -8 + 0 6 + 2r = -8 Add '-6' to each side of the equation. 6 + -6 + 2r = -8 + -6 Combine like terms: 6 + -6 = 0 0 + 2r = -8 + -6 2r = -8 + -6 Combine like terms: -8 + -6 = -14 2r = -14 Divide each side by '2'. r = -7 Simplifying r = -7
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