Verified answer

Bonjour,

-5i - 7 + 6iz = 0

⇔ 6iz = 5i + 7

⇔ z = (5i + 7)/6i

⇔ z = (5i + 7)x(-i)/6ix(-i)

⇔ z = (-5i² - 7i)/-6i²

⇔ z = (5 - 7i)/6 = 5/6 - 7i/6