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