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Answer :

b= -1.5

4/9=2/3 +1/3b

4/9= 6/9+1/3b

-2/9=1/3b

-2/9=3/9b

/-2/9

b= - 1.5

Answer:

Exact Form:

b = -2/3

Decimal Form:

b = -0.¯6