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Simplifying (7 + i) + -1(8 + -1i) = 0 Remove parenthesis around (7 + i) 7 + i + -1(8 + -1i) = 0 7 + i + (8 * -1 + -1i * -1) = 0 7 + i + (-8 + 1i) = 0 Reorder the terms: 7 + -8 + i + 1i = 0 Combine like terms: 7 + -8 = -1 -1 + i + 1i = 0 Combine like terms: i + 1i = 2i -1 + 2i = 0 Solving -1 + 2i = 0 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2i = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2i = 0 + 1 2i = 0 + 1 Combine like terms: 0 + 1 = 1 2i = 1 Divide each side by '2'. i = 0.5 Simplifying i = 0.5
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