given,
4/3b + 2 = 4 - 1/3b
so,
recall this can also be written as
4b/3 + 2 = 4 - b/3
4b + 6 = 12 - b
so lets collect like terms
4b + b = 12 - 6
5b = 6
divide both sides by 5
5b/5 = 6/5
b = 6/5
so option A is the correct option
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