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Simplifying -1(3 + I)(7 + -3i) = 0 Multiply (3 + I) * (7 + -3i) -1(3(7 + -3i) + I(7 + -3i)) = 0 -1((7 * 3 + -3i * 3) + I(7 + -3i)) = 0 -1((21 + -9i) + I(7 + -3i)) = 0 -1(21 + -9i + (7 * I + -3i * I)) = 0 -1(21 + -9i + (7I + -3iI)) = 0 Reorder the terms: -1(21 + 7I + -9i + -3iI) = 0 -1(21 + 7I + -9i + -3iI) = 0 (21 * -1 + 7I * -1 + -9i * -1 + -3iI * -1) = 0 (-21 + -7I + 9i + 3iI) = 0 Solving -21 + -7I + 9i + 3iI = 0 Solving for variable 'I'. Move all terms containing I to the left, all other terms to the right. Add '21' to each side of the equation. -21 + -7I + 9i + 21 + 3iI = 0 + 21 Reorder the terms: -21 + 21 + -7I + 9i + 3iI = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -7I + 9i + 3iI = 0 + 21 -7I + 9i + 3iI = 0 + 21 Combine like terms: 0 + 21 = 21 -7I + 9i + 3iI = 21 Add '-9i' to each side of the equation. -7I + 9i + -9i + 3iI = 21 + -9i Combine like terms: 9i + -9i = 0 -7I + 0 + 3iI = 21 + -9i -7I + 3iI = 21 + -9i Reorder the terms: -21 + -7I + 9i + 3iI = 21 + -9i + -21 + 9i Reorder the terms: -21 + -7I + 9i + 3iI = 21 + -21 + -9i + 9i Combine like terms: 21 + -21 = 0 -21 + -7I + 9i + 3iI = 0 + -9i + 9i -21 + -7I + 9i + 3iI = -9i + 9i Combine like terms: -9i + 9i = 0 -21 + -7I + 9i + 3iI = 0 The solution to this equation could not be determined.
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