-4 1/2x1 2/5

To simplify this expression, we need to convert the mixed numbers into improper fractions.

-4 1/2 can be written as -9/2, and

1 2/5 can be written as 7/5.

So the expression becomes (-9/2) x (7/5).

To multiply fractions, you multiply the numerators together and the denominators together.

(-9/2) x (7/5) = (-9 x 7) / (2 x 5) = -63/10.

Therefore, -4 1/2 x 1 2/5 = -63/10.