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Simplifying -2x + 3 + 4x + -7 = 12 Reorder the terms: 3 + -7 + -2x + 4x = 12 Combine like terms: 3 + -7 = -4 -4 + -2x + 4x = 12 Combine like terms: -2x + 4x = 2x -4 + 2x = 12 Solving -4 + 2x = 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 + 2x = 12 + 4 Combine like terms: -4 + 4 = 0 0 + 2x = 12 + 4 2x = 12 + 4 Combine like terms: 12 + 4 = 16 2x = 16 Divide each side by '2'. x = 8 Simplifying x = 8
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