ok, so we just do manipulations on the first equation so one side ends up looking like BD/DC, the other side should have some manipultions on m. here goes:
Now, this might be considered an algebra problem, but in the exercise I have to find the answer to:
Please let me know if I need to include more information or anything if this seems vague, it's probably an easy problem but I just don't understand how to get the correct answer, thanks.
-DC/BD = m ...............BD/DC is positive, so make that side positive
=> DC/BD = -m ..........i just multiplied through by -1
=> BD/DC = -1/m ........i took the inverse, so now one side looks like what we wanted and the other side tells us what it is in terms of m