Question

Упростите выражение:

Answer 1

(у-4)/(3у-3) : у+1/3 + 2/(y-1)(y+1)= у-4+3/3у-3 : y+1/3 + 2/(y-1)(y+1)= 3(y-1)/3(y-1)(y+1)+2/(y-1)(y+1)= 1/y+1 + 2/(y-1)(y+1)= y-1+2/ (y-1)(y+1)= у+1/(у+1)(у-1)=1/у-1

/-дробь
: -деление дроби на дробь