Question 375250
y = 3x+17, the first equation.  Put into the bottom equation:
2x - 3(3x + 17) = -23,
2x - 9x - 51 = -23,
-7x = 28,
x = -4.  Then y = 3*-4 + 17 = -12 + 17 = 5.  So y = 5.