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Simplifying r + -4 + 6r = 19 + -3 Reorder the terms: -4 + r + 6r = 19 + -3 Combine like terms: r + 6r = 7r -4 + 7r = 19 + -3 Combine like terms: 19 + -3 = 16 -4 + 7r = 16 Solving -4 + 7r = 16 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 7r = 16 + 4 Combine like terms: -4 + 4 = 0 0 + 7r = 16 + 4 7r = 16 + 4 Combine like terms: 16 + 4 = 20 7r = 20 Divide each side by '7'. r = 2.857142857 Simplifying r = 2.857142857
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