Multiply by .

The change of base rule can be used if and are greater than and not equal to , and is greater than .

Substitute in values for the variables in the change of base formula, using .

The change of base rule can be used if and are greater than and not equal to , and is greater than .

Substitute in values for the variables in the change of base formula, using .

Cancel the common factor.

Rewrite the expression.

Cancel the common factor.

Rewrite the expression.

Evaluate ( log base 3 of 7)( log base 7 of 3)