Question 466051
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Hi,
solve by substitution 
4=3x-y  OR y = 3x-4
9x=3y+12
9x = 3(3x-4) + 12
  0 = 0  Infinite solutions (graphically, the same line)

solve by elimination 
3x-16=5y
-3x+5y-33=0

 3x-5y=16
-3x+5y=33
    0 &#8800; 49  There is NO solution