Answer:
a - b
Step-by-step explanation:
b - 3b + a + b.
Combine like terms
= a - b
Answer:
[tex]\boxed{\bold{-b+a}}[/tex]
Explanation:
Group Like Terms
= [tex]\bold{b-3b+b+a}[/tex]
Combine Similar Elements: [tex]\bold{b-3b+b=-b}[/tex]
= [tex]\bold{-b+a}[/tex]
- M -