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Simplifying 6r + 7 = 5r + 20 Reorder the terms: 7 + 6r = 5r + 20 Reorder the terms: 7 + 6r = 20 + 5r Solving 7 + 6r = 20 + 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. 7 + 6r + -5r = 20 + 5r + -5r Combine like terms: 6r + -5r = 1r 7 + 1r = 20 + 5r + -5r Combine like terms: 5r + -5r = 0 7 + 1r = 20 + 0 7 + 1r = 20 Add '-7' to each side of the equation. 7 + -7 + 1r = 20 + -7 Combine like terms: 7 + -7 = 0 0 + 1r = 20 + -7 1r = 20 + -7 Combine like terms: 20 + -7 = 13 1r = 13 Divide each side by '1'. r = 13 Simplifying r = 13
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