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Simplifying 7x + 2 + -5x = 42 Reorder the terms: 2 + 7x + -5x = 42 Combine like terms: 7x + -5x = 2x 2 + 2x = 42 Solving 2 + 2x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 2x = 42 + -2 Combine like terms: 2 + -2 = 0 0 + 2x = 42 + -2 2x = 42 + -2 Combine like terms: 42 + -2 = 40 2x = 40 Divide each side by '2'. x = 20 Simplifying x = 20
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