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Simplifying -4[x + -5] = 12 Reorder the terms: -4[-5 + x] = 12 [-5 * -4 + x * -4] = 12 [20 + -4x] = 12 Solving 20 + -4x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -4x = 12 + -20 Combine like terms: 20 + -20 = 0 0 + -4x = 12 + -20 -4x = 12 + -20 Combine like terms: 12 + -20 = -8 -4x = -8 Divide each side by '-4'. x = 2 Simplifying x = 2
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