1.

\eqalign{ & - 7m - \left[ {3n - \left\{ {8m - \left( {4n - 10m} \right)} \right\}} \right] \cr & {\text{simplifies to - }} \cr} $$

A. 11m - 5n
B. 11m - 7n
C. 11n - 7m
D. 13n - 11m
Answer» C. 11n - 7m


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