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Simplifying 4 + 5r = r + 8 Reorder the terms: 4 + 5r = 8 + r Solving 4 + 5r = 8 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. 4 + 5r + -1r = 8 + r + -1r Combine like terms: 5r + -1r = 4r 4 + 4r = 8 + r + -1r Combine like terms: r + -1r = 0 4 + 4r = 8 + 0 4 + 4r = 8 Add '-4' to each side of the equation. 4 + -4 + 4r = 8 + -4 Combine like terms: 4 + -4 = 0 0 + 4r = 8 + -4 4r = 8 + -4 Combine like terms: 8 + -4 = 4 4r = 4 Divide each side by '4'. r = 1 Simplifying r = 1
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