Anhui People's Education Publishing House, eighth grade mathematics basic training, Volume II 1 1, how to write the title 10? I can't type those symbols.
Just like me.
Judging from the meaning of the question:
3a-b+ 1=0 2a-b=0
Solution: a=- 1 b=-2.
(b^2/a+b)+((b/a-b)*ab/a+b))
=-4/3/(-2*(-2/3))
=- 1