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Simplifying -7x + -45 = 12 + -4x Reorder the terms: -45 + -7x = 12 + -4x Solving -45 + -7x = 12 + -4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4x' to each side of the equation. -45 + -7x + 4x = 12 + -4x + 4x Combine like terms: -7x + 4x = -3x -45 + -3x = 12 + -4x + 4x Combine like terms: -4x + 4x = 0 -45 + -3x = 12 + 0 -45 + -3x = 12 Add '45' to each side of the equation. -45 + 45 + -3x = 12 + 45 Combine like terms: -45 + 45 = 0 0 + -3x = 12 + 45 -3x = 12 + 45 Combine like terms: 12 + 45 = 57 -3x = 57 Divide each side by '-3'. x = -19 Simplifying x = -19
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