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Simplifying -21.6 = -5.4x Solving -21.6 = -5.4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.4x' to each side of the equation. -21.6 + 5.4x = -5.4x + 5.4x Combine like terms: -5.4x + 5.4x = 0.0 -21.6 + 5.4x = 0.0 Add '21.6' to each side of the equation. -21.6 + 21.6 + 5.4x = 0.0 + 21.6 Combine like terms: -21.6 + 21.6 = 0.0 0.0 + 5.4x = 0.0 + 21.6 5.4x = 0.0 + 21.6 Combine like terms: 0.0 + 21.6 = 21.6 5.4x = 21.6 Divide each side by '5.4'. x = 4 Simplifying x = 4
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