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Simplifying 7x + -1 + 20 = 450 Reorder the terms: -1 + 20 + 7x = 450 Combine like terms: -1 + 20 = 19 19 + 7x = 450 Solving 19 + 7x = 450 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + 7x = 450 + -19 Combine like terms: 19 + -19 = 0 0 + 7x = 450 + -19 7x = 450 + -19 Combine like terms: 450 + -19 = 431 7x = 431 Divide each side by '7'. x = 61.57142857 Simplifying x = 61.57142857
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