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Simplifying 12 + 2x = 4x + -3(4 + -1x) 12 + 2x = 4x + (4 * -3 + -1x * -3) 12 + 2x = 4x + (-12 + 3x) Reorder the terms: 12 + 2x = -12 + 4x + 3x Combine like terms: 4x + 3x = 7x 12 + 2x = -12 + 7x Solving 12 + 2x = -12 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 12 + 2x + -7x = -12 + 7x + -7x Combine like terms: 2x + -7x = -5x 12 + -5x = -12 + 7x + -7x Combine like terms: 7x + -7x = 0 12 + -5x = -12 + 0 12 + -5x = -12 Add '-12' to each side of the equation. 12 + -12 + -5x = -12 + -12 Combine like terms: 12 + -12 = 0 0 + -5x = -12 + -12 -5x = -12 + -12 Combine like terms: -12 + -12 = -24 -5x = -24 Divide each side by '-5'. x = 4.8 Simplifying x = 4.8
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