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Simplifying 5 + 7r = -25r + 7r Combine like terms: -25r + 7r = -18r 5 + 7r = -18r Solving 5 + 7r = -18r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '18r' to each side of the equation. 5 + 7r + 18r = -18r + 18r Combine like terms: 7r + 18r = 25r 5 + 25r = -18r + 18r Combine like terms: -18r + 18r = 0 5 + 25r = 0 Add '-5' to each side of the equation. 5 + -5 + 25r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 25r = 0 + -5 25r = 0 + -5 Combine like terms: 0 + -5 = -5 25r = -5 Divide each side by '25'. r = -0.2 Simplifying r = -0.2
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