Perform the indicated operation and write your answer with positive integer exponents.
-$$\frac { m ^ { - 1 } + n ^ { - 1 } } { ( m n ) ^ { - 1 } }$$
A) $- n + m$
B) $n - m$
C) $- n - m$
D) $n + m$

Question

Quizplus · Accepted Answer

The expression simplifies to $n + m$ by multiplying both the numerator and the denominator by $mn$ to eliminate the negative exponents.

Perform the Indicated Operation and Write Your Answer with Positive m−1+n−1(mn)−1\frac { m ^ { - 1 } + n ^ { - 1 } } { ( m n ) ^ { - 1 } }(mn)−1m−1+n−1​

Perform the Indicated Operation and Write Your Answer with Positive $\frac { m ^ { - 1 } + n ^ { - 1 } } { ( m n ) ^ { - 1 } }$