The difference between two numbers is 12. If 2 is added to seven times the smaller number, the result is the same as if 2 is subtracted from three times the larger number. Find the numbers.

• x-y=12----(1)
  7y+2=3x-2
  3x-7y=4-----(2)
  
  by solving 1 and 2
  x=20,y=8.
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