Solve for b
b=7.6032
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\frac{b}{12.8}=-13.306+13.9
Add 13.9 to both sides.
\frac{b}{12.8}=0.594
Add -13.306 and 13.9 to get 0.594.
b=0.594\times 12.8
Multiply both sides by 12.8.
b=7.6032
Multiply 0.594 and 12.8 to get 7.6032.
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