Solve equation for b
the equation is a=a+b+c over 6 .
it is a fraction .
so a=a+b+c

6

OK so A = a+b+c/6

You have to solve for b

So first multiply both sides by 6 to get rid of the fraction

So the 6 will cancel out leaving you with

6A = a+b+c

No divide by A+C

6A/a+c = b