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Simplifying 5r + 2r + 3 = 0 Reorder the terms: 3 + 5r + 2r = 0 Combine like terms: 5r + 2r = 7r 3 + 7r = 0 Solving 3 + 7r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 7r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 7r = 0 + -3 7r = 0 + -3 Combine like terms: 0 + -3 = -3 7r = -3 Divide each side by '7'. r = -0.4285714286 Simplifying r = -0.4285714286
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