Predict the result
Solve negative eight b equals 168.

Set up the model
Divide both sides by the nonzero coefficient, negative eight.
Check by multiplying the solution by the original coefficient.

Work the example
One hundred sixty eight divided by negative eight is negative twenty one.
Negative eight times negative twenty one is one hundred sixty eight.

Check the result
Solve x divided by seventeen equals negative three.
Take eight seconds to think before the answer appears.
[Eight-second silent pause to work; the answer remains hidden.]
Multiplying by seventeen gives x equals negative fifty one.

Interpret the result
Division by a nonzero number preserves equality when applied to both sides.