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Simplifying -4 + 4r = 8 + -4r + 3r Combine like terms: -4r + 3r = -1r -4 + 4r = 8 + -1r Solving -4 + 4r = 8 + -1r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add 'r' to each side of the equation. -4 + 4r + r = 8 + -1r + r Combine like terms: 4r + r = 5r -4 + 5r = 8 + -1r + r Combine like terms: -1r + r = 0 -4 + 5r = 8 + 0 -4 + 5r = 8 Add '4' to each side of the equation. -4 + 4 + 5r = 8 + 4 Combine like terms: -4 + 4 = 0 0 + 5r = 8 + 4 5r = 8 + 4 Combine like terms: 8 + 4 = 12 5r = 12 Divide each side by '5'. r = 2.4 Simplifying r = 2.4
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