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Simplifying 20 = 2(x + -4) + 2x Reorder the terms: 20 = 2(-4 + x) + 2x 20 = (-4 * 2 + x * 2) + 2x 20 = (-8 + 2x) + 2x Combine like terms: 2x + 2x = 4x 20 = -8 + 4x Solving 20 = -8 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 20 + -4x = -8 + 4x + -4x Combine like terms: 4x + -4x = 0 20 + -4x = -8 + 0 20 + -4x = -8 Add '-20' to each side of the equation. 20 + -20 + -4x = -8 + -20 Combine like terms: 20 + -20 = 0 0 + -4x = -8 + -20 -4x = -8 + -20 Combine like terms: -8 + -20 = -28 -4x = -28 Divide each side by '-4'. x = 7 Simplifying x = 7
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