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Simplifying 6.9 = 8.4 + -0.5x Solving 6.9 = 8.4 + -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. 6.9 + 0.5x = 8.4 + -0.5x + 0.5x Combine like terms: -0.5x + 0.5x = 0.0 6.9 + 0.5x = 8.4 + 0.0 6.9 + 0.5x = 8.4 Add '-6.9' to each side of the equation. 6.9 + -6.9 + 0.5x = 8.4 + -6.9 Combine like terms: 6.9 + -6.9 = 0.0 0.0 + 0.5x = 8.4 + -6.9 0.5x = 8.4 + -6.9 Combine like terms: 8.4 + -6.9 = 1.5 0.5x = 1.5 Divide each side by '0.5'. x = 3 Simplifying x = 3
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