A group of students, Arya, Benny, and Clara, are working on problems involving rational numbers. They are trying to understand how certain numbers don't change the value of other rational numbers when added or multiplied. Their teacher gave them a series of expressions to simplify, and they discussed the properties that apply to each situation.
1. Arya is simplifying the expression: \(\frac{2}{7}+ x =\frac{2}{7}\). What value of \(x\) makes this equation true?
2. Benny is working on: \(\frac{5}{9} \times y = \frac{5}{9}\). What number should \(y\) be?
3. Clara is working on: If a rational number \(\frac{-113}{7}\) is added its additive identity, What will be the result?