Predict the result
How do you simplify three times the quantity x plus four?
The outside factor applies to both terms.

Set up the model
Multiply three by x and also by four.
This is the distributive property.

Work the example
Three times x plus three times four is the expanded expression.
Three times four is twelve.
The result is three x plus twelve.
Both expressions have equal values for every x.

Check the result
Now simplify four times the quantity x plus two.
Take eight seconds to think before the answer appears.
[Eight-second silent pause to work; the answer remains hidden.]
Distribute four to both terms.
The result is four x plus eight.

Interpret the result
Multiplying only one term would change the expression.
Use the original task and check that your result fits its meaning.