Fetching details from the dictionary...

to finish; to make an end of; to get through with; to let end
to make do (with); to manage (with)
to resolve; to settle; to bring to a conclusion
宿題を済ませてから遊ぼうと約束した。
Let's play after finishing homework.
用事を済ませてから帰ります。
I'll go home after finishing my errands.
今日の朝食を簡単に済ませた。
I quickly finished today's breakfast.