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Simplifying x + x + 42 = 742 Reorder the terms: 42 + x + x = 742 Combine like terms: x + x = 2x 42 + 2x = 742 Solving 42 + 2x = 742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + 2x = 742 + -42 Combine like terms: 42 + -42 = 0 0 + 2x = 742 + -42 2x = 742 + -42 Combine like terms: 742 + -42 = 700 2x = 700 Divide each side by '2'. x = 350 Simplifying x = 350
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