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Simplifying 9r * 2 + -6r + -7 = 0 Reorder the terms for easier multiplication: 9 * 2r + -6r + -7 = 0 Multiply 9 * 2 18r + -6r + -7 = 0 Reorder the terms: -7 + 18r + -6r = 0 Combine like terms: 18r + -6r = 12r -7 + 12r = 0 Solving -7 + 12r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 12r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 12r = 0 + 7 12r = 0 + 7 Combine like terms: 0 + 7 = 7 12r = 7 Divide each side by '12'. r = 0.5833333333 Simplifying r = 0.5833333333
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