a: \(-2,\left(14\right)=-2-\dfrac{14}{99}=-\dfrac{212}{99}\)
b: \(31,3\left(5\right)=31,3+0,0\left(5\right)=\dfrac{313}{10}+\dfrac{1}{18}=\dfrac{1411}{45}\)
c: \(1,\left(98\right)=1+\dfrac{98}{99}=\dfrac{197}{99}\)
a) \(-2,\left(14\right)=\dfrac{-212}{99}\)
b) \(31,3\left(5\right)=\dfrac{1411}{45}\)
c) \(1,\left(98\right)=\dfrac{195}{99}\)