Solve for b
b=3.5
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7b=16.5+8
Add 8 to both sides.
7b=24.5
Add 16.5 and 8 to get 24.5.
b=\frac{24.5}{7}
Divide both sides by 7.
b=\frac{245}{70}
Expand \frac{24.5}{7} by multiplying both numerator and the denominator by 10.
b=\frac{7}{2}
Reduce the fraction \frac{245}{70} to lowest terms by extracting and canceling out 35.
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