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y-1=3(9-2y) 5+y+2y=-1 1/2(y+2)-1=1/4y
x=9-2y x=5+y x=y+2
y=28-6y 3y=-6 1/2y=1/4y
x=9-2y y=-2 1/4y=0
7y=28 x=3 x=y+2
y=4 y=0
x=1 x=2