A Clean Equation

A Clean Equation is a Railroad radiant quest in Fallout 4. It requires the Sole Survivor to go to a random location and eliminate a Brotherhood patrol.

Detailed walkthrough
The Pip-Boy will be updated with the location of a Brotherhood patrol at a random location. Travel to that location and eliminate the Brotherhood patrol through whatever means necessary. A patrol consists of 3 Brotherhood soldiers of variable ranks.

Return to P.A.M. at the Railroad HQ. She will congratulate the player character on a job well done and give out a reward of 130 bottlecaps.

Bugs

 * Even if the player character is not hostile with the Brotherhood of Steel after finishing the game, P.A.M will assign them this quest. It also shares this bug with another radiant quest, High Ground which P.A.M. can also assign.
 * It is possible for the Brotherhood Patrol to die before the player character reaches them, which does not fail the quest but will seemingly cause it to break. There is no apparent way to complete A Clean Equation should this happen, though P.A.M. will dispense new quests.

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