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Simplifying -7 = -0.4x + 4 Reorder the terms: -7 = 4 + -0.4x Solving -7 = 4 + -0.4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4x' to each side of the equation. -7 + 0.4x = 4 + -0.4x + 0.4x Combine like terms: -0.4x + 0.4x = 0.0 -7 + 0.4x = 4 + 0.0 -7 + 0.4x = 4 Add '7' to each side of the equation. -7 + 7 + 0.4x = 4 + 7 Combine like terms: -7 + 7 = 0 0 + 0.4x = 4 + 7 0.4x = 4 + 7 Combine like terms: 4 + 7 = 11 0.4x = 11 Divide each side by '0.4'. x = 27.5 Simplifying x = 27.5
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