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Simplifying 3x3 + -6x2 + -15X + 18 = 0 Reorder the terms: 18 + -15X + -6x2 + 3x3 = 0 Solving 18 + -15X + -6x2 + 3x3 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -15X + -6x2 + -18 + 3x3 = 0 + -18 Reorder the terms: 18 + -18 + -15X + -6x2 + 3x3 = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -15X + -6x2 + 3x3 = 0 + -18 -15X + -6x2 + 3x3 = 0 + -18 Combine like terms: 0 + -18 = -18 -15X + -6x2 + 3x3 = -18 Add '6x2' to each side of the equation. -15X + -6x2 + 6x2 + 3x3 = -18 + 6x2 Combine like terms: -6x2 + 6x2 = 0 -15X + 0 + 3x3 = -18 + 6x2 -15X + 3x3 = -18 + 6x2 Add '-3x3' to each side of the equation. -15X + 3x3 + -3x3 = -18 + 6x2 + -3x3 Combine like terms: 3x3 + -3x3 = 0 -15X + 0 = -18 + 6x2 + -3x3 -15X = -18 + 6x2 + -3x3 Divide each side by '-15'. X = 1.2 + -0.4x2 + 0.2x3 Simplifying X = 1.2 + -0.4x2 + 0.2x3
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