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Simplifying 1.6x + -2[x + -3.6(x + 9)] = x Reorder the terms: 1.6x + -2[x + -3.6(9 + x)] = x 1.6x + -2[x + (9 * -3.6 + x * -3.6)] = x 1.6x + -2[x + (-32.4 + -3.6x)] = x Reorder the terms: 1.6x + -2[-32.4 + x + -3.6x] = x Combine like terms: x + -3.6x = -2.6x 1.6x + -2[-32.4 + -2.6x] = x 1.6x + [-32.4 * -2 + -2.6x * -2] = x 1.6x + [64.8 + 5.2x] = x Reorder the terms: 64.8 + 1.6x + 5.2x = x Combine like terms: 1.6x + 5.2x = 6.8x 64.8 + 6.8x = x Solving 64.8 + 6.8x = x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 64.8 + 6.8x + -1x = x + -1x Combine like terms: 6.8x + -1x = 5.8x 64.8 + 5.8x = x + -1x Combine like terms: x + -1x = 0 64.8 + 5.8x = 0 Add '-64.8' to each side of the equation. 64.8 + -64.8 + 5.8x = 0 + -64.8 Combine like terms: 64.8 + -64.8 = 0.0 0.0 + 5.8x = 0 + -64.8 5.8x = 0 + -64.8 Combine like terms: 0 + -64.8 = -64.8 5.8x = -64.8 Divide each side by '5.8'. x = -11.17241379 Simplifying x = -11.17241379
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