If 2/-9 is the additive inverse of 2/q , then q is equal to


An additive inverse of a number is the value, which on adding with the original number results in zero value. For example, the additive inverse of 3 is -3. 

Given 2/-9 is the additive inverse of 2/q.

additive inverse of 2/-9 is 2/9.

(-2/9) + (2/9) = 0

So q = 9

Hence the value of q is 9.

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