Question 465320
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Hi
solving by elimination
3x - y = 13 
3x + y = 17

 3x - y = 13 
-3x - y = -17  |subtracting 2nd EQ from 1st EQ to eliminate x
  -2y = -4
    y = 2  and x = 5   (3x-2=13, 3x = 15, x = 5)
CHECKING our Answer***
3x + y = 17
15 + 2 = 17