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Simplifying -12 = -4(x + 3) Reorder the terms: -12 = -4(3 + x) -12 = (3 * -4 + x * -4) -12 = (-12 + -4x) Add '12' to each side of the equation. -12 + 12 = -12 + 12 + -4x Combine like terms: -12 + 12 = 0 0 = -12 + 12 + -4x Combine like terms: -12 + 12 = 0 0 = 0 + -4x 0 = -4x Solving 0 = -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. 0 + 4x = -4x + 4x Remove the zero: 4x = -4x + 4x Combine like terms: -4x + 4x = 0 4x = 0 Divide each side by '4'. x = 0 Simplifying x = 0
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