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Simplifying 4.2 = 7.2 + -0.5x Solving 4.2 = 7.2 + -0.5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5x' to each side of the equation. 4.2 + 0.5x = 7.2 + -0.5x + 0.5x Combine like terms: -0.5x + 0.5x = 0.0 4.2 + 0.5x = 7.2 + 0.0 4.2 + 0.5x = 7.2 Add '-4.2' to each side of the equation. 4.2 + -4.2 + 0.5x = 7.2 + -4.2 Combine like terms: 4.2 + -4.2 = 0.0 0.0 + 0.5x = 7.2 + -4.2 0.5x = 7.2 + -4.2 Combine like terms: 7.2 + -4.2 = 3 0.5x = 3 Divide each side by '0.5'. x = 6 Simplifying x = 6
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