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Simplifying (6 + 3x + 9x2 + 7x3) + (1 + -3x + 9x2 + -7x3) = 0 Remove parenthesis around (6 + 3x + 9x2 + 7x3) 6 + 3x + 9x2 + 7x3 + (1 + -3x + 9x2 + -7x3) = 0 Remove parenthesis around (1 + -3x + 9x2 + -7x3) 6 + 3x + 9x2 + 7x3 + 1 + -3x + 9x2 + -7x3 = 0 Reorder the terms: 6 + 1 + 3x + -3x + 9x2 + 9x2 + 7x3 + -7x3 = 0 Combine like terms: 6 + 1 = 7 7 + 3x + -3x + 9x2 + 9x2 + 7x3 + -7x3 = 0 Combine like terms: 3x + -3x = 0 7 + 0 + 9x2 + 9x2 + 7x3 + -7x3 = 0 7 + 9x2 + 9x2 + 7x3 + -7x3 = 0 Combine like terms: 9x2 + 9x2 = 18x2 7 + 18x2 + 7x3 + -7x3 = 0 Combine like terms: 7x3 + -7x3 = 0 7 + 18x2 + 0 = 0 7 + 18x2 = 0 Solving 7 + 18x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 18x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 18x2 = 0 + -7 18x2 = 0 + -7 Combine like terms: 0 + -7 = -7 18x2 = -7 Divide each side by '18'. x2 = -0.3888888889 Simplifying x2 = -0.3888888889 Reorder the terms: 0.3888888889 + x2 = -0.3888888889 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.3888888889 + x2 = 0.0000000000 The solution to this equation could not be determined.
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