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Simplifying -7x + 4 + 3x = 12 Reorder the terms: 4 + -7x + 3x = 12 Combine like terms: -7x + 3x = -4x 4 + -4x = 12 Solving 4 + -4x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -4x = 12 + -4 Combine like terms: 4 + -4 = 0 0 + -4x = 12 + -4 -4x = 12 + -4 Combine like terms: 12 + -4 = 8 -4x = 8 Divide each side by '-4'. x = -2 Simplifying x = -2
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