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Simplifying x2 + 11r + 30 = 0 Reorder the terms: 30 + 11r + x2 = 0 Solving 30 + 11r + x2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + 11r + -30 + x2 = 0 + -30 Reorder the terms: 30 + -30 + 11r + x2 = 0 + -30 Combine like terms: 30 + -30 = 0 0 + 11r + x2 = 0 + -30 11r + x2 = 0 + -30 Combine like terms: 0 + -30 = -30 11r + x2 = -30 Add '-1x2' to each side of the equation. 11r + x2 + -1x2 = -30 + -1x2 Combine like terms: x2 + -1x2 = 0 11r + 0 = -30 + -1x2 11r = -30 + -1x2 Divide each side by '11'. r = -2.727272727 + -0.09090909091x2 Simplifying r = -2.727272727 + -0.09090909091x2
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