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Simplifying 0.4x + -7.2 = 0.5 * 3.2x Reorder the terms: -7.2 + 0.4x = 0.5 * 3.2x Multiply 0.5 * 3.2 -7.2 + 0.4x = 1.6x Solving -7.2 + 0.4x = 1.6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6x' to each side of the equation. -7.2 + 0.4x + -1.6x = 1.6x + -1.6x Combine like terms: 0.4x + -1.6x = -1.2x -7.2 + -1.2x = 1.6x + -1.6x Combine like terms: 1.6x + -1.6x = 0.0 -7.2 + -1.2x = 0.0 Add '7.2' to each side of the equation. -7.2 + 7.2 + -1.2x = 0.0 + 7.2 Combine like terms: -7.2 + 7.2 = 0.0 0.0 + -1.2x = 0.0 + 7.2 -1.2x = 0.0 + 7.2 Combine like terms: 0.0 + 7.2 = 7.2 -1.2x = 7.2 Divide each side by '-1.2'. x = -6 Simplifying x = -6
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