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Simplifying 2.8x + -0.4y + 1.5 = 0 Reorder the terms: 1.5 + 2.8x + -0.4y = 0 Solving 1.5 + 2.8x + -0.4y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + 2.8x + -1.5 + -0.4y = 0 + -1.5 Reorder the terms: 1.5 + -1.5 + 2.8x + -0.4y = 0 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + 2.8x + -0.4y = 0 + -1.5 2.8x + -0.4y = 0 + -1.5 Combine like terms: 0 + -1.5 = -1.5 2.8x + -0.4y = -1.5 Add '0.4y' to each side of the equation. 2.8x + -0.4y + 0.4y = -1.5 + 0.4y Combine like terms: -0.4y + 0.4y = 0.0 2.8x + 0.0 = -1.5 + 0.4y 2.8x = -1.5 + 0.4y Divide each side by '2.8'. x = -0.5357142857 + 0.1428571429y Simplifying x = -0.5357142857 + 0.1428571429y
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