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You have to bleed the system that was opened,in this case the front. When was the whole system bled last? If it was me I would do the entire system to get the old fluid out and fresh in. work from the farthest to closest calipers.
Gary
I'd bleed the whole thing. This car is new to you, and despite popular opinion, brake fluid should be changed regularly--it absorbs water, and trust me, you DO NOT want your brake lines to rust through.
If you want to bleed the whole system, the sequence is:
back left inner,
back left outer,
back right inner,
back right outer,
right front,
left front.
Good luck. :flag