1 4/5 : 2 1/4 =
= - 9/5 : 9/4 =
= - 9/5 * 4/9 =
= - 1/5 * 4/1 =
= - 4/5
-4/5
-0.8 ;
The quotient of -1 \frac{4}{5} and 2 \frac{1}{4} is − 45 4 . We converted both mixed numbers to improper fractions, performed the division by multiplying by the reciprocal, and simplified the result.
;