Question

Calculați : 1,(3)+1,2(5)

Answer 1

$\displaystyle 1,(3)+1,2(5)= \frac{13-1}{9} + \frac{125-12}{90} = \frac{12}{9} + \frac{113}{90} = \frac{120+113}{90} = \frac{233}{90}$