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Simplifying 24 + 8r = -12 + 4r Solving 24 + 8r = -12 + 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. 24 + 8r + -4r = -12 + 4r + -4r Combine like terms: 8r + -4r = 4r 24 + 4r = -12 + 4r + -4r Combine like terms: 4r + -4r = 0 24 + 4r = -12 + 0 24 + 4r = -12 Add '-24' to each side of the equation. 24 + -24 + 4r = -12 + -24 Combine like terms: 24 + -24 = 0 0 + 4r = -12 + -24 4r = -12 + -24 Combine like terms: -12 + -24 = -36 4r = -36 Divide each side by '4'. r = -9 Simplifying r = -9
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