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Simplifying -1x3 + 6x2 + 15X + 8 = 0 Reorder the terms: 8 + 15X + 6x2 + -1x3 = 0 Solving 8 + 15X + 6x2 + -1x3 = 0 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 + 15X + 6x2 + -8 + -1x3 = 0 + -8 Reorder the terms: 8 + -8 + 15X + 6x2 + -1x3 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 15X + 6x2 + -1x3 = 0 + -8 15X + 6x2 + -1x3 = 0 + -8 Combine like terms: 0 + -8 = -8 15X + 6x2 + -1x3 = -8 Add '-6x2' to each side of the equation. 15X + 6x2 + -6x2 + -1x3 = -8 + -6x2 Combine like terms: 6x2 + -6x2 = 0 15X + 0 + -1x3 = -8 + -6x2 15X + -1x3 = -8 + -6x2 Add 'x3' to each side of the equation. 15X + -1x3 + x3 = -8 + -6x2 + x3 Combine like terms: -1x3 + x3 = 0 15X + 0 = -8 + -6x2 + x3 15X = -8 + -6x2 + x3 Divide each side by '15'. X = -0.5333333333 + -0.4x2 + 0.06666666667x3 Simplifying X = -0.5333333333 + -0.4x2 + 0.06666666667x3
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