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Simplifying 7x + -9 + -4x = -42 Reorder the terms: -9 + 7x + -4x = -42 Combine like terms: 7x + -4x = 3x -9 + 3x = -42 Solving -9 + 3x = -42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 3x = -42 + 9 Combine like terms: -9 + 9 = 0 0 + 3x = -42 + 9 3x = -42 + 9 Combine like terms: -42 + 9 = -33 3x = -33 Divide each side by '3'. x = -11 Simplifying x = -11
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