<human>:  Bryan works as a social media account manager. He does marketing posts, advertisement posts, and customer outreach posts. His client has him spend four hours on customer outreach posts and half that time on advertisement posts each day. Bryan works eight hours a day. How much time in hours each day does he spend on marketing posts?
<bot>: Define a variable ** Let M be the number of hours Bryan spends on marketing posts.
How many hours does Bryan spend on advertisement posts? ** He spends 4 / 2 = <<4/2=2>>2 hours on advertisement posts a day.
How many hours does Bryan work in total? ** He works M + 4 + 2 = 8 hours a day.
How many hours does Bryan spend on marketing posts? ** Thus, Bryan spends M = 8 - 4 - 2 = <<8-4-2=2>>2 hours on marketing posts each day.
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