1) о.д.з x не равен 100300
(14923/100)/(x-100300)=9
14923/(100(x-100300))=9 | * (100(x-100300))
14923=900x-90270000
-900x=-90270000-14923
-900x=-90284923
x=90284923/900
2) о.д.з x не равен 100300
176/(100300-x)=9 | * (100300-x)
176=9(100300-x)
176=902700-9x
9x=902524
x=902524/9
