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Simplifying (5r2 + -5r + -6) + (6r3 + -1r2 + 2r) + -1(7r + 5) = 0 Reorder the terms: (-6 + -5r + 5r2) + (6r3 + -1r2 + 2r) + -1(7r + 5) = 0 Remove parenthesis around (-6 + -5r + 5r2) -6 + -5r + 5r2 + (6r3 + -1r2 + 2r) + -1(7r + 5) = 0 Reorder the terms: -6 + -5r + 5r2 + (2r + -1r2 + 6r3) + -1(7r + 5) = 0 Remove parenthesis around (2r + -1r2 + 6r3) -6 + -5r + 5r2 + 2r + -1r2 + 6r3 + -1(7r + 5) = 0 Reorder the terms: -6 + -5r + 5r2 + 2r + -1r2 + 6r3 + -1(5 + 7r) = 0 -6 + -5r + 5r2 + 2r + -1r2 + 6r3 + (5 * -1 + 7r * -1) = 0 -6 + -5r + 5r2 + 2r + -1r2 + 6r3 + (-5 + -7r) = 0 Reorder the terms: -6 + -5 + -5r + 2r + -7r + 5r2 + -1r2 + 6r3 = 0 Combine like terms: -6 + -5 = -11 -11 + -5r + 2r + -7r + 5r2 + -1r2 + 6r3 = 0 Combine like terms: -5r + 2r = -3r -11 + -3r + -7r + 5r2 + -1r2 + 6r3 = 0 Combine like terms: -3r + -7r = -10r -11 + -10r + 5r2 + -1r2 + 6r3 = 0 Combine like terms: 5r2 + -1r2 = 4r2 -11 + -10r + 4r2 + 6r3 = 0 Solving -11 + -10r + 4r2 + 6r3 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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