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Simplifying 0.80x + 0.45(160) = 0.40(142) Multiply 0.45 * 160 0.80x + 72 = 0.40(142) Reorder the terms: 72 + 0.80x = 0.40(142) Multiply 0.40 * 142 72 + 0.80x = 56.8 Solving 72 + 0.80x = 56.8 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-72' to each side of the equation. 72 + -72 + 0.80x = 56.8 + -72 Combine like terms: 72 + -72 = 0 0 + 0.80x = 56.8 + -72 0.80x = 56.8 + -72 Combine like terms: 56.8 + -72 = -15.2 0.80x = -15.2 Divide each side by '0.80'. x = -19 Simplifying x = -19
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