Question 788652
Multiply top and bottom by i to get 


{{{9/(7i) = (9i)/(7i*i)}}}


{{{9/(7i) = (9i)/(7i^2)}}}


{{{9/(7i) = (9i)/(7(-1))}}}


{{{9/(7i) = -(9/7)i}}}


{{{9/(7i) = 0 + (-(9/7))i}}}


Answer is {{{9/(7i) = 0 + (-(9/7))i}}}


Notice how {{{0 + (-(9/7))i}}} is in the form {{{a+bi}}} where {{{a=0}}} and {{{b = -9/7}}}