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Simplifying 12 = 3 + -4(2 + x) 12 = 3 + (2 * -4 + x * -4) 12 = 3 + (-8 + -4x) Combine like terms: 3 + -8 = -5 12 = -5 + -4x Solving 12 = -5 + -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. 12 + 4x = -5 + -4x + 4x Combine like terms: -4x + 4x = 0 12 + 4x = -5 + 0 12 + 4x = -5 Add '-12' to each side of the equation. 12 + -12 + 4x = -5 + -12 Combine like terms: 12 + -12 = 0 0 + 4x = -5 + -12 4x = -5 + -12 Combine like terms: -5 + -12 = -17 4x = -17 Divide each side by '4'. x = -4.25 Simplifying x = -4.25
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