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Simplifying -8 + -5r = -4r Solving -8 + -5r = -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 + -5r + 4r = -4r + 4r Combine like terms: -5r + 4r = -1r -8 + -1r = -4r + 4r Combine like terms: -4r + 4r = 0 -8 + -1r = 0 Add '8' to each side of the equation. -8 + 8 + -1r = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1r = 0 + 8 -1r = 0 + 8 Combine like terms: 0 + 8 = 8 -1r = 8 Divide each side by '-1'. r = -8 Simplifying r = -8
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