Final answer:
The expression -10/13 x 5/11 is simplified by multiplying the numerators and the denominators to get -50/143, which is in its simplest form as there are no common factors other than 1.
Step-by-step explanation:
To simplify the expression -10/13 x 5/11, you multiply the numerators together and the denominators together.
This gives:
-10 * 5 = -50, and
13 * 11 = 143.
Therefore, the simplified form of the expression is -50/143.
There are no common factors between 50 and 143 other than 1, so the fraction is already in its simplest form.