Question

помогитееееееееееееееееееееее​

Answer 1

Ответ:

В) не знаю простииииииииии

Answer 2

Ответ:

Объяснение:

(2/3b)+(3/b)=(2/3b)+(9/3b)=11/3b

(2/(4-y))-(y/(y²-16))=(2/(4-y))+(y/(16-y²))=(2/(4-y))+(y/(4-y)()4+y)=

=(2(4+y)/(4+y)(4-y))+(y/(4-y)(4+y)=(8+2y+y)/(16-y²)=(8+3y)/(16-y²)