Question

ПОМОГИТЕ ПЛИЗ!
3,1(28)+2,(21)

Answer 1

3,1(28)+2,(21)=$3 frac{128-1}{990}+2 frac{21}{99}= 3 frac{127}{990}+2 frac{210}{990} = 5 frac{337}{990}=5,3(40)$