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Simplifying -42 = -1x + -0.4x + -28 Reorder the terms: -42 = -28 + -1x + -0.4x Combine like terms: -1x + -0.4x = -1.4x -42 = -28 + -1.4x Solving -42 = -28 + -1.4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4x' to each side of the equation. -42 + 1.4x = -28 + -1.4x + 1.4x Combine like terms: -1.4x + 1.4x = 0.0 -42 + 1.4x = -28 + 0.0 -42 + 1.4x = -28 Add '42' to each side of the equation. -42 + 42 + 1.4x = -28 + 42 Combine like terms: -42 + 42 = 0 0 + 1.4x = -28 + 42 1.4x = -28 + 42 Combine like terms: -28 + 42 = 14 1.4x = 14 Divide each side by '1.4'. x = 10 Simplifying x = 10
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