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Simplifying x2 + -2x + -1x + -2 = x2 + -3x + -4x + -12 Reorder the terms: -2 + -2x + -1x + x2 = x2 + -3x + -4x + -12 Combine like terms: -2x + -1x = -3x -2 + -3x + x2 = x2 + -3x + -4x + -12 Reorder the terms: -2 + -3x + x2 = -12 + -3x + -4x + x2 Combine like terms: -3x + -4x = -7x -2 + -3x + x2 = -12 + -7x + x2 Add '-1x2' to each side of the equation. -2 + -3x + x2 + -1x2 = -12 + -7x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 + -3x + 0 = -12 + -7x + x2 + -1x2 -2 + -3x = -12 + -7x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 + -3x = -12 + -7x + 0 -2 + -3x = -12 + -7x Solving -2 + -3x = -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. -2 + -3x + 7x = -12 + -7x + 7x Combine like terms: -3x + 7x = 4x -2 + 4x = -12 + -7x + 7x Combine like terms: -7x + 7x = 0 -2 + 4x = -12 + 0 -2 + 4x = -12 Add '2' to each side of the equation. -2 + 2 + 4x = -12 + 2 Combine like terms: -2 + 2 = 0 0 + 4x = -12 + 2 4x = -12 + 2 Combine like terms: -12 + 2 = -10 4x = -10 Divide each side by '4'. x = -2.5 Simplifying x = -2.5
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