Question 414017
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Hi
solving by substitution method:
 y=3x+15
2x-3y= -17  

2x - 3(3x+15) = -17
   -7x = -17 + 45
   -7x = 28
     x = -4   and   y = 3

CHECKING our Answer***
 2*-4 - 3*3 = -8-9 = -17