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Simplifying r + 2 + -3(5 + -2r) = 0 r + 2 + (5 * -3 + -2r * -3) = 0 r + 2 + (-15 + 6r) = 0 Reorder the terms: 2 + -15 + r + 6r = 0 Combine like terms: 2 + -15 = -13 -13 + r + 6r = 0 Combine like terms: r + 6r = 7r -13 + 7r = 0 Solving -13 + 7r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + 7r = 0 + 13 Combine like terms: -13 + 13 = 0 0 + 7r = 0 + 13 7r = 0 + 13 Combine like terms: 0 + 13 = 13 7r = 13 Divide each side by '7'. r = 1.857142857 Simplifying r = 1.857142857
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