b=(a+c)/2⇒2b=a+c
a+b+c=12⇒a+c=12-b
2b=12-b
3b=12
b=4
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
b=(a+c)/2⇒2b=a+c
a+b+c=12⇒a+c=12-b
2b=12-b
3b=12
b=4