Answer:
C. [tex]75b-8a[/tex]
Step-by-step explanation:
The expression [tex]71b-4a+4b-4a[/tex] consists of four terms:
[tex]71b\\ \\-4a\\ \\4b\\ \\-4a[/tex]
Using the commutative property of addition, combine the like terms:
[tex]71b-4a+4b-4a=(71b+4b)+(-4a-4a)[/tex]
Add the terms in the brackets:
[tex](71b+4b)+(-4a-4a)=(75b)+(-8a)=75b-8a[/tex]
