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Simplifying 9x2 + 19r + 2 = 0 Reorder the terms: 2 + 19r + 9x2 = 0 Solving 2 + 19r + 9x2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + 19r + -2 + 9x2 = 0 + -2 Reorder the terms: 2 + -2 + 19r + 9x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 19r + 9x2 = 0 + -2 19r + 9x2 = 0 + -2 Combine like terms: 0 + -2 = -2 19r + 9x2 = -2 Add '-9x2' to each side of the equation. 19r + 9x2 + -9x2 = -2 + -9x2 Combine like terms: 9x2 + -9x2 = 0 19r + 0 = -2 + -9x2 19r = -2 + -9x2 Divide each side by '19'. r = -0.1052631579 + -0.4736842105x2 Simplifying r = -0.1052631579 + -0.4736842105x2
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