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Simplifying 20 = 2(x + -4) Reorder the terms: 20 = 2(-4 + x) 20 = (-4 * 2 + x * 2) 20 = (-8 + 2x) Solving 20 = -8 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 20 + -2x = -8 + 2x + -2x Combine like terms: 2x + -2x = 0 20 + -2x = -8 + 0 20 + -2x = -8 Add '-20' to each side of the equation. 20 + -20 + -2x = -8 + -20 Combine like terms: 20 + -20 = 0 0 + -2x = -8 + -20 -2x = -8 + -20 Combine like terms: -8 + -20 = -28 -2x = -28 Divide each side by '-2'. x = 14 Simplifying x = 14
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