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1/2x-3y=1,5x-2y+2
2x=1-2y
x=y+2
2x=-2y
x=y+2
2·(y+2)=-2y
2y+4=-2y
4y=-4 /:4
y= -1
x=y+2
x= -1+2= 1
x=1
y= -1