Question

23-3(b+1)+5(6b-7)-7(3b-1)=0

Answer 1

23-3(b+1)+5(6b-7)-7(3b-1)=0.
23-(3b-3)+(30b-35)-(21b+7)=0.
23-3b-3+30b-35-21b+7=0.
-3b+30b-21b=-23+3+35-7.
6b=8.
b=8/6=4/3.

Answer 2

спосибо

Answer 3

Не за что.

Answer 4

23-3(b+1)+5(6b-7)-7(3b-1)=0
23-3b-3+30b-35-21b+7=0
6b=8
b=8/6
b=4/3

Answer 5

спосибо