Попробую(x^2-3*x)/(x-3)+1/(x-3)+(x^2+3*x)/(x+3)+7/(x+3)=10(x*(x-3))/(x-3)+1/(x-3)+(x*(x+3))/(x+3)+7/(x+3)=10x+1/(x-3)+x+7/(x+3)=102*x+(x+3)/((x+3)*(x-3))+(7*(x-3))/((x-3)*(x+3))=102*x+(x+3)/((x+3)*(x-3))+(7*x-21)/((x-3)*(x+3))=102*x+(x+3+7*x-21)/((x-3)*(x+3))=102*x+(8*x-18)/((x-3)*(x+3))=102*x+(2*(4*x-9)/((x-3)*(x+3))=102*x+2*(4*x-9)/((x-3)*(x+3))=102*(x+(4*x-9)/((x-3)*(x+3))=10x+(4*x-9)/((x-3)*(x+3))=10:2x+(4*x-9)/((x-3)*(x+3))=5Дальше какой-то бред получается