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Simplifying 1 + x + -1x3 = 2 + x(8 + -1x2) 1 + x + -1x3 = 2 + (8 * x + -1x2 * x) 1 + x + -1x3 = 2 + (8x + -1x3) Add 'x3' to each side of the equation. 1 + x + -1x3 + x3 = 2 + 8x + -1x3 + x3 Combine like terms: -1x3 + x3 = 0 1 + x + 0 = 2 + 8x + -1x3 + x3 1 + x = 2 + 8x + -1x3 + x3 Combine like terms: -1x3 + x3 = 0 1 + x = 2 + 8x + 0 1 + x = 2 + 8x Solving 1 + x = 2 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 1 + x + -8x = 2 + 8x + -8x Combine like terms: x + -8x = -7x 1 + -7x = 2 + 8x + -8x Combine like terms: 8x + -8x = 0 1 + -7x = 2 + 0 1 + -7x = 2 Add '-1' to each side of the equation. 1 + -1 + -7x = 2 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 2 + -1 -7x = 2 + -1 Combine like terms: 2 + -1 = 1 -7x = 1 Divide each side by '-7'. x = -0.1428571429 Simplifying x = -0.1428571429
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