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Simplifying x + 5r = 7r Reorder the terms: 5r + x = 7r Solving 5r + x = 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. 5r + -7r + x = 7r + -7r Combine like terms: 5r + -7r = -2r -2r + x = 7r + -7r Combine like terms: 7r + -7r = 0 -2r + x = 0 Add '-1x' to each side of the equation. -2r + x + -1x = 0 + -1x Combine like terms: x + -1x = 0 -2r + 0 = 0 + -1x -2r = 0 + -1x Remove the zero: -2r = -1x Divide each side by '-2'. r = 0.5x Simplifying r = 0.5x
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