Answer:[tex]\frac{1}{50} , \frac{13}{50}[/tex]

Step-by-step explanation:

An additive inverse of a number is defined as the value, which on adding with the original number results in zero value.

1/-50 can also be written as -1/50. And the number that when added to -1/50 that gives 0 is 1/50. So it's additive inverse is 1/50

=>[tex]\frac{-1}{50} +\frac{1}{50} = 0[/tex]

The number that when added to -13/50 that gives 0 is 13/50. So it's additive inverse is 13/50