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Simplifying 12 = 4x + -2 + -2(x + 2) Reorder the terms: 12 = 4x + -2 + -2(2 + x) 12 = 4x + -2 + (2 * -2 + x * -2) 12 = 4x + -2 + (-4 + -2x) Reorder the terms: 12 = -2 + -4 + 4x + -2x Combine like terms: -2 + -4 = -6 12 = -6 + 4x + -2x Combine like terms: 4x + -2x = 2x 12 = -6 + 2x Solving 12 = -6 + 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. 12 + -2x = -6 + 2x + -2x Combine like terms: 2x + -2x = 0 12 + -2x = -6 + 0 12 + -2x = -6 Add '-12' to each side of the equation. 12 + -12 + -2x = -6 + -12 Combine like terms: 12 + -12 = 0 0 + -2x = -6 + -12 -2x = -6 + -12 Combine like terms: -6 + -12 = -18 -2x = -18 Divide each side by '-2'. x = 9 Simplifying x = 9
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