x+6/x+5 + 10/x²-25=4/3
x+3/x-7 - 10/x+7=140/x²-49
x+3/x+1 - x+1/1-x=4/x²-1
x+6/x-4 + 50/(x-4)(x-9)=9+x/9-x
/ - дробь