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yeah, this is math.
( f8 S6 j( X  {4 G5 |0.1x+3y+6z=100 and x+y+z=100.
  J- p$ u5 P) @! }. Q1 _' Q" wtvb now,tvbnow,bttvb3 variables 2 equations, hmmm, very hard to solve.
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