prompt: Together 3 friends watched 411 short videos. Kelsey watched 43 more than Ekon. Ekon watched 17 less than Uma. How many videos did Kelsey watch?
messages.content: Together 3 friends watched 411 short videos. Kelsey watched 43 more than Ekon. Ekon watched 17 less than Uma. How many videos did Kelsey watch?
messages.role: user
messages.content: Let U = the number of videos Uma watched
  Ekon = U - 17
  Kelsey = (U - 17) + 43 = U + <<(-17)+43=26>>26
  U + U - 17 + U + 26 = 411
  3U + 9 = 411
  3U = 402
  U = <<134=134>>134
  Kelsey = 134 + 26 = <<134+26=160>>160 videos
  Kelsey watched 160 videos.
  #### 160
messages.role: assistant