=>y(x-2)-2x+4=5
=>(x-2)(y-2)=5
=>\(\left(x-2;y-2\right)\in\left\{\left(1;5\right);\left(5;1\right);\left(-1;-5\right);\left(-5;-1\right)\right\}\)
=>\(\left(x,y\right)\in\left\{\left(3;7\right);\left(7;3\right);\left(1;-3\right);\left(-3;1\right)\right\}\)