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Simplifying 4.2x + 31.5 = 65.1 Reorder the terms: 31.5 + 4.2x = 65.1 Solving 31.5 + 4.2x = 65.1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-31.5' to each side of the equation. 31.5 + -31.5 + 4.2x = 65.1 + -31.5 Combine like terms: 31.5 + -31.5 = 0.0 0.0 + 4.2x = 65.1 + -31.5 4.2x = 65.1 + -31.5 Combine like terms: 65.1 + -31.5 = 33.6 4.2x = 33.6 Divide each side by '4.2'. x = 8 Simplifying x = 8
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