Solve for b
b = \frac{25}{9} = 2\frac{7}{9} \approx 2.777777778
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-\frac{1}{3}=-\frac{1}{9}-\frac{27}{9}+b
Convert 3 to fraction \frac{27}{9}.
-\frac{1}{3}=\frac{-1-27}{9}+b
Since -\frac{1}{9} and \frac{27}{9} have the same denominator, subtract them by subtracting their numerators.
-\frac{1}{3}=-\frac{28}{9}+b
Subtract 27 from -1 to get -28.
-\frac{28}{9}+b=-\frac{1}{3}
Swap sides so that all variable terms are on the left hand side.
b=-\frac{1}{3}+\frac{28}{9}
Add \frac{28}{9} to both sides.
b=-\frac{3}{9}+\frac{28}{9}
Least common multiple of 3 and 9 is 9. Convert -\frac{1}{3} and \frac{28}{9} to fractions with denominator 9.
b=\frac{-3+28}{9}
Since -\frac{3}{9} and \frac{28}{9} have the same denominator, add them by adding their numerators.
b=\frac{25}{9}
Add -3 and 28 to get 25.
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