Predict the result
Simplify negative six times seven x.

Set up the model
Use the associative property to group numerical factors.
Multiply coefficients and retain the variable factors.

Work the example
Negative six times seven is negative forty two.
The simplified term is negative forty two x.

Check the result
Now simplify nine a times negative four b.
Take eight seconds to think before the answer appears.
[Eight-second silent pause to work; the answer remains hidden.]
The result is negative thirty six a b.

Interpret the result
Multiplication combines factors; it does not combine unlike additive terms.