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Simplifying 2(r + x) = 5r (r * 2 + x * 2) = 5r (2r + 2x) = 5r Solving 2r + 2x = 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. 2r + -5r + 2x = 5r + -5r Combine like terms: 2r + -5r = -3r -3r + 2x = 5r + -5r Combine like terms: 5r + -5r = 0 -3r + 2x = 0 Add '-2x' to each side of the equation. -3r + 2x + -2x = 0 + -2x Combine like terms: 2x + -2x = 0 -3r + 0 = 0 + -2x -3r = 0 + -2x Remove the zero: -3r = -2x Divide each side by '-3'. r = 0.6666666667x Simplifying r = 0.6666666667x
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