Answer
similarity: both involve multiplying the numerators and then dividing by the product of the denominators
difference: product of rational expressions may contain restricted values, while there are no restricted values for the product of numerical fractions.
Work Step by Step
Multiplying rational expressions and multiplying numerical fractions are similar since both involve multiplying the numerators and then dividing by the product of the denominators.
They are different since the product of rational expressions may contain restricted values while the product of numerical fractions do not have any restrictions.