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Simplifying x + (2x + -6) = 42 Reorder the terms: x + (-6 + 2x) = 42 Remove parenthesis around (-6 + 2x) x + -6 + 2x = 42 Reorder the terms: -6 + x + 2x = 42 Combine like terms: x + 2x = 3x -6 + 3x = 42 Solving -6 + 3x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 3x = 42 + 6 Combine like terms: -6 + 6 = 0 0 + 3x = 42 + 6 3x = 42 + 6 Combine like terms: 42 + 6 = 48 3x = 48 Divide each side by '3'. x = 16 Simplifying x = 16
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