SOLUTION: Solve the equation or formula for the specified variable. a=3b-c solve for b I don't understand how to do it

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Question 211139This question is from textbook algebra 2
: Solve the equation or formula for the specified variable.
a=3b-c solve for b

I don't understand how to do it This question is from textbook algebra 2

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation or formula for the specified variable.
a=3b-c solve for b
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You want to get b on one side of the equal sign by itself.
Add c to both sides
a+c = 3b
3b = a+c
Divide by 3
b = (1/3)*(a+c) or
b = (a+c)/3