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Simplifying (3r + -2)(7) = 0 Reorder the terms: (-2 + 3r)(7) = 0 Reorder the terms for easier multiplication: 7(-2 + 3r) = 0 (-2 * 7 + 3r * 7) = 0 (-14 + 21r) = 0 Solving -14 + 21r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + 21r = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 21r = 0 + 14 21r = 0 + 14 Combine like terms: 0 + 14 = 14 21r = 14 Divide each side by '21'. r = 0.6666666667 Simplifying r = 0.6666666667
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