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I am reminded of this Reddit post from November last year, except this is fifth grade math homework:

https://www.reddit.com/r/mildlyinfuriating/comments/1gippqm/...

The puzzle is a grid of simultaneous equations with 9 unknowns:

  9 + ? - 6 = ? - 3
  -   =   -   =   x
  4 + ? x 5 - ? = 6
  /   +   +   -   -
  8 - 5 = ? - ? x 2
  x   -   -   -   x
  ? + 1 + 7 - 4 = 8
  =   -   =   +   =
  7 = ? x 3 - ? - 2


Deepthink thought for 644 seconds and says the answer is 4.

Probably didn't help that I just pasted it with no explanation, the spaces between the columns really threw it off.


Here’s the same puzzle minus the grid parsing step:

  A1: 9+a-6=b-3
  A2: 4+(c*5)-d=6
  A3: 8-5=e-(f*2)
  A4: g+1+7-4=8
  A5: 7=(h*3)-i-2
  D1: 9-((4/8)*g)=7
  D2: a=c+5-1-h
  D3: 6-5+e-7=3
  D4: b=d-f-4+i
  D5: (3*6)-(2*8)=2




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