-(3xy + 4jy) - (8j - 6x)

-(3xy + 4jy) - (8j - 6x) = -3xy-4jy-8j+6x

-(3xy+4jy)-(8j-6x)=-3xy-4jy-8j+6x

-( 3xy + 4jy ) - ( 8j - 6x) = -3xy - 4jy - 8j + 6x