1.

What number should be added to \[\frac{-4}{7}\]to get \[\frac{5}{9}\]?

A.  \[\frac{-71}{63}\]                           
B.                         \[\frac{71}{63}\]                             
C.                         \[\frac{1}{63}\]                               
D.                         \[\frac{-1}{63}\]
Answer» C.                         \[\frac{1}{63}\]                               


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