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4(x+1) - 3(y+2) = 12*2 (2y-x)
(x+1)²-3y = (x-1)(x+1)+6
4x+4 -3y-6 = 48y -24x
x²+2x+1-3y = x²-1+6
28x-51y = 2
2x-3y = 4 ===============*-14
28x-51y =2
-28x +42y = -56
-9y = -54
y=6
2x -3*6 =4
2x - 18 =4
2x=22
x=11