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Simplifying 0.4i + -1I = [1] Reorder the terms: -1I + 0.4i = [1] -1I + 0.4i = 1 Solving -1I + 0.4i = 1 Solving for variable 'I'. Move all terms containing I to the left, all other terms to the right. Add '-0.4i' to each side of the equation. -1I + 0.4i + -0.4i = 1 + -0.4i Combine like terms: 0.4i + -0.4i = 0.0 -1I + 0.0 = 1 + -0.4i -1I = 1 + -0.4i Divide each side by '-1'. I = -1 + 0.4i Simplifying I = -1 + 0.4i
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