Question

-8(5b+9)-(3+b)+4(9+5b)

Answer 1

-8(5b+9)-(3+b)+4(9+5b)

-40b-72-(3+b)+4(9+5b)

-40b-72-3-b+4(9+5b)

-40b-72-3-b+36+20b

-21b-72-3+36

Ответ=-21b-39