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Simplifying 2(-42 + x) = 0 (-42 * 2 + x * 2) = 0 (-84 + 2x) = 0 Solving -84 + 2x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '84' to each side of the equation. -84 + 84 + 2x = 0 + 84 Combine like terms: -84 + 84 = 0 0 + 2x = 0 + 84 2x = 0 + 84 Combine like terms: 0 + 84 = 84 2x = 84 Divide each side by '2'. x = 42 Simplifying x = 42
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