`" If "(z_(2))/(z_(1))" is purely imaginary then "|(6z_(1)-8z_(2))/(4z_(2)+3z_(1))|" is equal to."`

If (5z_(1))/(7z_(2)) is purely imaginary then |(2z_(1)+3z_(2))/(2z_(1)-3z_(2))|=

if (5z_(2))/(7z_(1)) is purely imaginary number then |(2z_(1)+3z_(2))/(2z_(1)-3z_(2))| is equal to

If (3 z_(1))/(5 z_(2)) is purely imaginary, then |(2z_(1)-z_(2))/(2z_(1) + z_(2))| is equal to _________

If (2z_(1))/(3z_(2)) is purely imaginary number, then |(z_(1)-z_(2))/(z_(1)+z_(2))|^(4) is equal to

If z_(1), and z_(2) are complex numbers,such that (3z_(1))/(2z_(2)) is purely imaginary,then find |(z_(1)+z_(2))/(z_(1)-z_(2))|]|