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Simplifying 15x2 + 5 + -1[7(x2 + -3) + 7] = 0 Reorder the terms: 15x2 + 5 + -1[7(-3 + x2) + 7] = 0 15x2 + 5 + -1[(-3 * 7 + x2 * 7) + 7] = 0 15x2 + 5 + -1[(-21 + 7x2) + 7] = 0 Reorder the terms: 15x2 + 5 + -1[-21 + 7 + 7x2] = 0 Combine like terms: -21 + 7 = -14 15x2 + 5 + -1[-14 + 7x2] = 0 15x2 + 5 + [-14 * -1 + 7x2 * -1] = 0 15x2 + 5 + [14 + -7x2] = 0 Reorder the terms: 5 + 14 + 15x2 + -7x2 = 0 Combine like terms: 5 + 14 = 19 19 + 15x2 + -7x2 = 0 Combine like terms: 15x2 + -7x2 = 8x2 19 + 8x2 = 0 Solving 19 + 8x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + 8x2 = 0 + -19 Combine like terms: 19 + -19 = 0 0 + 8x2 = 0 + -19 8x2 = 0 + -19 Combine like terms: 0 + -19 = -19 8x2 = -19 Divide each side by '8'. x2 = -2.375 Simplifying x2 = -2.375 Reorder the terms: 2.375 + x2 = -2.375 + 2.375 Combine like terms: -2.375 + 2.375 = 0.000 2.375 + x2 = 0.000 The solution to this equation could not be determined.
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