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Simplifying 40 = 2x + -2(-2x + 4) Reorder the terms: 40 = 2x + -2(4 + -2x) 40 = 2x + (4 * -2 + -2x * -2) 40 = 2x + (-8 + 4x) Reorder the terms: 40 = -8 + 2x + 4x Combine like terms: 2x + 4x = 6x 40 = -8 + 6x Solving 40 = -8 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. 40 + -6x = -8 + 6x + -6x Combine like terms: 6x + -6x = 0 40 + -6x = -8 + 0 40 + -6x = -8 Add '-40' to each side of the equation. 40 + -40 + -6x = -8 + -40 Combine like terms: 40 + -40 = 0 0 + -6x = -8 + -40 -6x = -8 + -40 Combine like terms: -8 + -40 = -48 -6x = -48 Divide each side by '-6'. x = 8 Simplifying x = 8
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