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Simplifying 15x2 + 5 + -1[5(x2 + -7) + 9] = 0 Reorder the terms: 15x2 + 5 + -1[5(-7 + x2) + 9] = 0 15x2 + 5 + -1[(-7 * 5 + x2 * 5) + 9] = 0 15x2 + 5 + -1[(-35 + 5x2) + 9] = 0 Reorder the terms: 15x2 + 5 + -1[-35 + 9 + 5x2] = 0 Combine like terms: -35 + 9 = -26 15x2 + 5 + -1[-26 + 5x2] = 0 15x2 + 5 + [-26 * -1 + 5x2 * -1] = 0 15x2 + 5 + [26 + -5x2] = 0 Reorder the terms: 5 + 26 + 15x2 + -5x2 = 0 Combine like terms: 5 + 26 = 31 31 + 15x2 + -5x2 = 0 Combine like terms: 15x2 + -5x2 = 10x2 31 + 10x2 = 0 Solving 31 + 10x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-31' to each side of the equation. 31 + -31 + 10x2 = 0 + -31 Combine like terms: 31 + -31 = 0 0 + 10x2 = 0 + -31 10x2 = 0 + -31 Combine like terms: 0 + -31 = -31 10x2 = -31 Divide each side by '10'. x2 = -3.1 Simplifying x2 = -3.1 Reorder the terms: 3.1 + x2 = -3.1 + 3.1 Combine like terms: -3.1 + 3.1 = 0.0 3.1 + x2 = 0.0 The solution to this equation could not be determined.
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