7x-11 при x = 2 1\_25x-3 при x = 2 1\_3
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7x-11 при x = 2 1\_2 5x-3 при x = 2 1\_3
7x-11=7*2 1/2-11=7*2,5-11=17,5-11=6,5  
  
5 х-3=5*2 1/3-3=5*7/3-3=11 2/3-3=8 2/3