Solve for f
f=8
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\frac{16}{f}=\frac{-8}{-4}
Divide both sides by -4.
\frac{16}{f}=2
Divide -8 by -4 to get 2.
16=2f
Variable f cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by f.
2f=16
Swap sides so that all variable terms are on the left hand side.
f=\frac{16}{2}
Divide both sides by 2.
f=8
Divide 16 by 2 to get 8.
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