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Simplifying 9x2 + -1 + 4x2 + 9 = -21 Reorder the terms: -1 + 9 + 9x2 + 4x2 = -21 Combine like terms: -1 + 9 = 8 8 + 9x2 + 4x2 = -21 Combine like terms: 9x2 + 4x2 = 13x2 8 + 13x2 = -21 Solving 8 + 13x2 = -21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 13x2 = -21 + -8 Combine like terms: 8 + -8 = 0 0 + 13x2 = -21 + -8 13x2 = -21 + -8 Combine like terms: -21 + -8 = -29 13x2 = -29 Divide each side by '13'. x2 = -2.230769231 Simplifying x2 = -2.230769231 Reorder the terms: 2.230769231 + x2 = -2.230769231 + 2.230769231 Combine like terms: -2.230769231 + 2.230769231 = 0.000000000 2.230769231 + x2 = 0.000000000 The solution to this equation could not be determined.
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