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Surya Raj M · Answer 1 · 2018-10-14T01:49:45+0000

You will have to get ride of the denominator first then isolate the variable. I will use x as big A since theres no capital letters in equation mode:

$x = (a + b + c)/(3) \\ 3x = a + b + c \\ 3x - a - c = b$
So b is

b = 3x - a - c

Remember I used x as big A in the equation.

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